87078472 has 16 divisors (see below), whose sum is σ = 175831740. Its totient is φ = 40190016.

The previous prime is 87078449. The next prime is 87078479. The reversal of 87078472 is 27487078.

It can be written as a sum of positive squares in 2 ways, for example, as 85266756 + 1811716 = 9234^2 + 1346^2 .

It is not an unprimeable number, because it can be changed into a prime (87078479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418543 + ... + 418750.

Almost surely, 2^87078472 is an apocalyptic number.

It is an amenable number.

87078472 is an abundant number, since it is smaller than the sum of its proper divisors (88753268).

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

87078472 is a wasteful number, since it uses less digits than its factorization.

87078472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837312 (or 837308 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 43.

The square root of 87078472 is about 9331.5846457073. The cubic root of 87078472 is about 443.2379455710.

The spelling of 87078472 in words is "eighty-seven million, seventy-eight thousand, four hundred seventy-two".