87456404 has 24 divisors (see below), whose sum is σ = 175176960. Its totient is φ = 37424736.

The previous prime is 87456401. The next prime is 87456407. The reversal of 87456404 is 40465478.

It is an interprime number because it is at equal distance from previous prime (87456401) and next prime (87456407).

It is a super-2 number, since 2×87456404² = 15297245201222432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87456401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20357 + ... + 24275.

It is an arithmetic number, because the mean of its divisors is an integer number (7299040).

Almost surely, 2^87456404 is an apocalyptic number.

It is an amenable number.

87456404 is an abundant number, since it is smaller than the sum of its proper divisors (87720556).

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

87456404 is a wasteful number, since it uses less digits than its factorization.

87456404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727 (or 4725 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 87456404 is about 9351.8128723793. The cubic root of 87456404 is about 443.8782570743.

The spelling of 87456404 in words is "eighty-seven million, four hundred fifty-six thousand, four hundred four".