87072636 has 24 divisors (see below), whose sum is σ = 232193920. Its totient is φ = 24877872.

The previous prime is 87072619. The next prime is 87072673. The reversal of 87072636 is 63627078.

It is a junction number, because it is equal to n+sod(n) for n = 87072594 and 87072603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518206 + ... + 518373.

Almost surely, 2^87072636 is an apocalyptic number.

It is an amenable number.

87072636 is an abundant number, since it is smaller than the sum of its proper divisors (145121284).

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

87072636 is a wasteful number, since it uses less digits than its factorization.

87072636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036593 (or 1036591 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 87072636 is about 9331.2719390231. The cubic root of 87072636 is about 443.2280434127.

The spelling of 87072636 in words is "eighty-seven million, seventy-two thousand, six hundred thirty-six".