87478836 has 24 divisors (see below), whose sum is σ = 204550080. Its totient is φ = 29097792.

The previous prime is 87478829. The next prime is 87478847. The reversal of 87478836 is 63887478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (8522920).

Almost surely, 2^87478836 is an apocalyptic number.

It is an amenable number.

87478836 is an abundant number, since it is smaller than the sum of its proper divisors (117071244).

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

87478836 is a wasteful number, since it uses less digits than its factorization.

87478836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15463 (or 15461 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 87478836 is about 9353.0121351359. The cubic root of 87478836 is about 443.9162044607.

The spelling of 87478836 in words is "eighty-seven million, four hundred seventy-eight thousand, eight hundred thirty-six".