87400928 has 12 divisors (see below), whose sum is σ = 172070640. Its totient is φ = 43700448.

The previous prime is 87400913. The next prime is 87400933. The reversal of 87400928 is 82900478.

It is a super-2 number, since 2×87400928² = 15277844430522368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87400891 and 87400900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365608 + ... + 1365671.

It is an arithmetic number, because the mean of its divisors is an integer number (14339220).

Almost surely, 2^87400928 is an apocalyptic number.

It is an amenable number.

87400928 is a deficient number, since it is larger than the sum of its proper divisors (84669712).

87400928 is a wasteful number, since it uses less digits than its factorization.

87400928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731289 (or 2731281 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 87400928 is about 9348.8463459402. The cubic root of 87400928 is about 443.7843824976.

The spelling of 87400928 in words is "eighty-seven million, four hundred thousand, nine hundred twenty-eight".