87404432 has 10 divisors (see below), whose sum is σ = 169346118. Its totient is φ = 43702208.

The previous prime is 87404431. The next prime is 87404437. The reversal of 87404432 is 23440478.

It can be written as a sum of positive squares in only one way, i.e., 70627216 + 16777216 = 8404^2 + 4096^2 .

It is not an unprimeable number, because it can be changed into a prime (87404431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2731373 + ... + 2731404.

Almost surely, 2^87404432 is an apocalyptic number.

It is an amenable number.

87404432 is a deficient number, since it is larger than the sum of its proper divisors (81941686).

87404432 is a wasteful number, since it uses less digits than its factorization.

87404432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5462785 (or 5462779 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 87404432 is about 9349.0337468639. The cubic root of 87404432 is about 443.7903130208.

The spelling of 87404432 in words is "eighty-seven million, four hundred four thousand, four hundred thirty-two".