87432578 has 8 divisors (see below), whose sum is σ = 132106572. Its totient is φ = 43397056.

The previous prime is 87432577. The next prime is 87432607. The reversal of 87432578 is 87523478.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87179569 + 253009 = 9337^2 + 503^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (87432577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159275 + ... + 159822.

Almost surely, 2^87432578 is an apocalyptic number.

87432578 is a deficient number, since it is larger than the sum of its proper divisors (44673994).

87432578 is a wasteful number, since it uses less digits than its factorization.

87432578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319236.

The product of its digits is 376320, while the sum is 44.

The square root of 87432578 is about 9350.5389149503. The cubic root of 87432578 is about 443.8379444026.

The spelling of 87432578 in words is "eighty-seven million, four hundred thirty-two thousand, five hundred seventy-eight".