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87369968 = 247829941
BaseRepresentation
bin1010011010100…
…10100011110000
320002101212001202
411031102203300
5134331314333
612400350332
72110426640
oct515224360
9202355052
1087369968
1145355394
12253153a8
1315140b0a
14b864520
157a0c5e8
hex53528f0

87369968 has 40 divisors (see below), whose sum is σ = 193901280. Its totient is φ = 37359360.

The previous prime is 87369929. The next prime is 87369983. The reversal of 87369968 is 86996378.

It is a super-2 number, since 2×873699682 = 15267022616642048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92378 + ... + 93318.

It is an arithmetic number, because the mean of its divisors is an integer number (4847532).

Almost surely, 287369968 is an apocalyptic number.

It is an amenable number.

87369968 is an abundant number, since it is smaller than the sum of its proper divisors (106531312).

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

87369968 is a wasteful number, since it uses less digits than its factorization.

87369968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1779 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 56.

The square root of 87369968 is about 9347.1903800019. The cubic root of 87369968 is about 443.7319757805.

The spelling of 87369968 in words is "eighty-seven million, three hundred sixty-nine thousand, nine hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 28 56 112 829 941 1658 1882 3316 3764 5803 6587 6632 7528 11606 13174 13264 15056 23212 26348 46424 52696 92848 105392 780089 1560178 3120356 5460623 6240712 10921246 12481424 21842492 43684984 87369968