87209372 has 12 divisors (see below), whose sum is σ = 152682096. Its totient is φ = 43585920.

The previous prime is 87209363. The next prime is 87209389. The reversal of 87209372 is 27390278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14348 + ... + 19500.

It is an arithmetic number, because the mean of its divisors is an integer number (12723508).

Almost surely, 2^87209372 is an apocalyptic number.

It is an amenable number.

87209372 is a deficient number, since it is larger than the sum of its proper divisors (65472724).

87209372 is a wasteful number, since it uses less digits than its factorization.

87209372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9388 (or 9386 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 87209372 is about 9338.5958259259. The cubic root of 87209372 is about 443.4599323123.

The spelling of 87209372 in words is "eighty-seven million, two hundred nine thousand, three hundred seventy-two".