87528478 has 64 divisors (see below), whose sum is σ = 157386240. Its totient is φ = 36191232.

The previous prime is 87528451. The next prime is 87528487. The reversal of 87528478 is 87482578.

It is a super-2 number, since 2×87528478² = 15322468921992968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 638826 + ... + 638962.

It is an arithmetic number, because the mean of its divisors is an integer number (2459160).

Almost surely, 2^87528478 is an apocalyptic number.

87528478 is a deficient number, since it is larger than the sum of its proper divisors (69857762).

87528478 is a wasteful number, since it uses less digits than its factorization.

87528478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241.

The product of its digits is 1003520, while the sum is 49.

The square root of 87528478 is about 9355.6655562285. The cubic root of 87528478 is about 444.0001589427. Note that the first 3 decimals are identical.

The spelling of 87528478 in words is "eighty-seven million, five hundred twenty-eight thousand, four hundred seventy-eight".