87455478 has 16 divisors (see below), whose sum is σ = 190812096. Its totient is φ = 26501640.

The previous prime is 87455411. The next prime is 87455513.

87455478 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662476 + ... + 662607.

It is an arithmetic number, because the mean of its divisors is an integer number (11925756).

Almost surely, 2^87455478 is an apocalyptic number.

87455478 is an abundant number, since it is smaller than the sum of its proper divisors (103356618).

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

87455478 is a wasteful number, since it uses less digits than its factorization.

87455478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325099.

The product of its digits is 1254400, while the sum is 48.

The square root of 87455478 is about 9351.7633631310. The cubic root of 87455478 is about 443.8766904548.

The spelling of 87455478 in words is "eighty-seven million, four hundred fifty-five thousand, four hundred seventy-eight".