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87047874 = 2326789811
BaseRepresentation
bin1010011000000…
…11111011000010
320001210111020100
411030003323002
5134241012444
612345423230
72104615614
oct514037302
9201714210
1087047874
11451553a1
122519ab16
131505a324
14b7bcdb4
157996e69
hex5303ec2

87047874 has 48 divisors (see below), whose sum is σ = 193808160. Its totient is φ = 28226880.

The previous prime is 87047869. The next prime is 87047903. The reversal of 87047874 is 47874078.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106929 + ... + 107739.

It is an arithmetic number, because the mean of its divisors is an integer number (4037670).

Almost surely, 287047874 is an apocalyptic number.

87047874 is an abundant number, since it is smaller than the sum of its proper divisors (106760286).

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

87047874 is a wasteful number, since it uses less digits than its factorization.

87047874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 87047874 is about 9329.9450159152. The cubic root of 87047874 is about 443.1860238841.

The spelling of 87047874 in words is "eighty-seven million, forty-seven thousand, eight hundred seventy-four".

Divisors: 1 2 3 6 9 18 67 89 134 178 201 267 402 534 603 801 811 1206 1602 1622 2433 4866 5963 7299 11926 14598 17889 35778 53667 54337 72179 107334 108674 144358 163011 216537 326022 433074 489033 649611 978066 1299222 4835993 9671986 14507979 29015958 43523937 87047874