87945236 has 6 divisors (see below), whose sum is σ = 153904170. Its totient is φ = 43972616.

The previous prime is 87945157. The next prime is 87945251. The reversal of 87945236 is 63254978.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 23464336 = 8030^2 + 4844^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10993151 + ... + 10993158.

It is an arithmetic number, because the mean of its divisors is an integer number (25650695).

Almost surely, 2^87945236 is an apocalyptic number.

It is an amenable number.

87945236 is a deficient number, since it is larger than the sum of its proper divisors (65958934).

87945236 is a wasteful number, since it uses less digits than its factorization.

87945236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21986313 (or 21986311 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 87945236 is about 9377.9121343719. The cubic root of 87945236 is about 444.7037307508.

The spelling of 87945236 in words is "eighty-seven million, nine hundred forty-five thousand, two hundred thirty-six".