87940072 has 32 divisors (see below), whose sum is σ = 180273600. Its totient is φ = 39884800.

The previous prime is 87940067. The next prime is 87940081. The reversal of 87940072 is 27004978.

It is a happy 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, 55629 + ... + 57187.

It is an arithmetic number, because the mean of its divisors is an integer number (5633550).

Almost surely, 2^87940072 is an apocalyptic number.

It is an amenable number.

87940072 is an abundant number, since it is smaller than the sum of its proper divisors (92333528).

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

87940072 is a wasteful number, since it uses less digits than its factorization.

87940072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217 (or 2213 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 87940072 is about 9377.6368025212. The cubic root of 87940072 is about 444.6950264892.

The spelling of 87940072 in words is "eighty-seven million, nine hundred forty thousand, seventy-two".