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87430752 = 253489379
BaseRepresentation
bin1010011011000…
…01011001100000
320002111221110000
411031201121200
5134340241002
612401540000
72111102103
oct515413140
9202457400
1087430752
1145397022
1225344600
1315162696
14b87c73a
157a2061c
hex5361660

87430752 has 120 divisors (see below), whose sum is σ = 260706600. Its totient is φ = 28740096.

The previous prime is 87430747. The next prime is 87430771. The reversal of 87430752 is 25703478.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 230499 + ... + 230877.

It is an arithmetic number, because the mean of its divisors is an integer number (2172555).

Almost surely, 287430752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87430752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130353300).

87430752 is an abundant number, since it is smaller than the sum of its proper divisors (173275848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87430752 is a wasteful number, since it uses less digits than its factorization.

87430752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 87430752 is about 9350.4412730095. The cubic root of 87430752 is about 443.8348545790.

It can be divided in two parts, 874 and 30752, that added together give a triangular number (31626 = T251).

The spelling of 87430752 in words is "eighty-seven million, four hundred thirty thousand, seven hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 81 89 96 108 144 162 178 216 267 288 324 356 379 432 534 648 712 758 801 864 1068 1137 1296 1424 1516 1602 2136 2274 2403 2592 2848 3032 3204 3411 4272 4548 4806 6064 6408 6822 7209 8544 9096 9612 10233 12128 12816 13644 14418 18192 19224 20466 25632 27288 28836 30699 33731 36384 38448 40932 54576 57672 61398 67462 76896 81864 101193 109152 115344 122796 134924 163728 202386 230688 245592 269848 303579 327456 404772 491184 539696 607158 809544 910737 982368 1079392 1214316 1619088 1821474 2428632 2732211 3238176 3642948 4857264 5464422 7285896 9714528 10928844 14571792 21857688 29143584 43715376 87430752