Search a number
-
+
87470148 = 223192913229
BaseRepresentation
bin1010011011010…
…11000001000100
320002120221111010
411031223001010
5134343021043
612402442220
72111325003
oct515530104
9202527433
1087470148
1145413687
1225363370
13151775ac
14b88cc3a
157a2c133
hex536b044

87470148 has 48 divisors (see below), whose sum is σ = 222264000. Its totient is φ = 26667648.

The previous prime is 87470113. The next prime is 87470153. The reversal of 87470148 is 84107478.

It is a super-2 number, since 2×874701482 = 15302053582283808, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3 + ... + 13226.

It is an arithmetic number, because the mean of its divisors is an integer number (4630500).

Almost surely, 287470148 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 87470148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111132000).

87470148 is an abundant number, since it is smaller than the sum of its proper divisors (134793852).

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

87470148 is a wasteful number, since it uses less digits than its factorization.

87470148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13284 (or 13282 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 87470148 is about 9352.5476742971. The cubic root of 87470148 is about 443.9015080616.

The spelling of 87470148 in words is "eighty-seven million, four hundred seventy thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 12 19 29 38 57 58 76 87 114 116 174 228 348 551 1102 1653 2204 3306 6612 13229 26458 39687 52916 79374 158748 251351 383641 502702 754053 767282 1005404 1150923 1508106 1534564 2301846 3016212 4603692 7289179 14578358 21867537 29156716 43735074 87470148