87136372 has 6 divisors (see below), whose sum is σ = 152488658. Its totient is φ = 43568184.

The previous prime is 87136367. The next prime is 87136391. The reversal of 87136372 is 27363178.

It can be written as a sum of positive squares in only one way, i.e., 51208336 + 35928036 = 7156^2 + 5994^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10892043 + ... + 10892050.

Almost surely, 2^87136372 is an apocalyptic number.

It is an amenable number.

87136372 is a deficient number, since it is larger than the sum of its proper divisors (65352286).

87136372 is a wasteful number, since it uses less digits than its factorization.

87136372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21784097 (or 21784095 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 87136372 is about 9334.6864971460. The cubic root of 87136372 is about 443.3361626945.

The spelling of 87136372 in words is "eighty-seven million, one hundred thirty-six thousand, three hundred seventy-two".