87224636 has 12 divisors (see below), whose sum is σ = 154793520. Its totient is φ = 42997920.

The previous prime is 87224629. The next prime is 87224639. The reversal of 87224636 is 63642278.

It is a self number, because there is not a number n which added to its sum of digits gives 87224636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87224639) 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, 153281 + ... + 153848.

It is an arithmetic number, because the mean of its divisors is an integer number (12899460).

Almost surely, 2^87224636 is an apocalyptic number.

It is an amenable number.

87224636 is a deficient number, since it is larger than the sum of its proper divisors (67568884).

87224636 is a wasteful number, since it uses less digits than its factorization.

87224636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307204 (or 307202 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 87224636 is about 9339.4130436554. The cubic root of 87224636 is about 443.4858032991.

The spelling of 87224636 in words is "eighty-seven million, two hundred twenty-four thousand, six hundred thirty-six".