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87039902 = 2349124699
BaseRepresentation
bin1010011000000…
…01111110011110
320001210002022002
411030001332132
5134240234102
612345322302
72104553435
oct514017636
9201702262
1087039902
114514a404
1225196392
1315056801
14b7ba11c
157994902
hex5301f9e

87039902 has 8 divisors (see below), whose sum is σ = 130935000. Its totient is φ = 43394904.

The previous prime is 87039853. The next prime is 87039913. The reversal of 87039902 is 20993078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61652 + ... + 63047.

It is an arithmetic number, because the mean of its divisors is an integer number (16366875).

Almost surely, 287039902 is an apocalyptic number.

87039902 is a deficient number, since it is larger than the sum of its proper divisors (43895098).

87039902 is a wasteful number, since it uses less digits than its factorization.

87039902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125050.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 87039902 is about 9329.5177796068. The cubic root of 87039902 is about 443.1724942148.

The spelling of 87039902 in words is "eighty-seven million, thirty-nine thousand, nine hundred two".

Divisors: 1 2 349 698 124699 249398 43519951 87039902