87404928 has 64 divisors (see below), whose sum is σ = 250042800. Its totient is φ = 26892288.

The previous prime is 87404923. The next prime is 87404951. The reversal of 87404928 is 82940478.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 87404928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87404923) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3763 + ... + 13746.

Almost surely, 2^87404928 is an apocalyptic number.

It is an amenable number.

87404928 is an abundant number, since it is smaller than the sum of its proper divisors (162637872).

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

87404928 is a wasteful number, since it uses less digits than its factorization.

87404928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17539 (or 17527 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 87404928 is about 9349.0602736318. The cubic root of 87404928 is about 443.7911524884.

The spelling of 87404928 in words is "eighty-seven million, four hundred four thousand, nine hundred twenty-eight".