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87465020 = 2254373251
BaseRepresentation
bin1010011011010…
…01110000111100
320002120200110012
411031221300330
5134342340040
612402402352
72111304026
oct515516074
9202520405
1087465020
114540a845
12253603b8
1315175166
14b88b016
157a2a865
hex5369c3c

87465020 has 12 divisors (see below), whose sum is σ = 183676584. Its totient is φ = 34986000.

The previous prime is 87464989. The next prime is 87465029. The reversal of 87465020 is 2056478.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87465029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2186606 + ... + 2186645.

It is an arithmetic number, because the mean of its divisors is an integer number (15306382).

Almost surely, 287465020 is an apocalyptic number.

It is an amenable number.

87465020 is an abundant number, since it is smaller than the sum of its proper divisors (96211564).

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

87465020 is a wasteful number, since it uses less digits than its factorization.

87465020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373260 (or 4373258 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 87465020 is about 9352.2735203800. The cubic root of 87465020 is about 443.8928332109.

The spelling of 87465020 in words is "eighty-seven million, four hundred sixty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 4373251 8746502 17493004 21866255 43732510 87465020