72136634 has 16 divisors (see below), whose sum is σ = 110941056. Its totient is φ = 35162400.

The previous prime is 72136621. The next prime is 72136663. The reversal of 72136634 is 43663127.

It is a self number, because there is not a number n which added to its sum of digits gives 72136634.

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, 25049 + ... + 27779.

It is an arithmetic number, because the mean of its divisors is an integer number (6933816).

Almost surely, 2^72136634 is an apocalyptic number.

72136634 is a deficient number, since it is larger than the sum of its proper divisors (38804422).

72136634 is a wasteful number, since it uses less digits than its factorization.

72136634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061.

The product of its digits is 18144, while the sum is 32.

The square root of 72136634 is about 8493.3287938240. The cubic root of 72136634 is about 416.2797558891.

The spelling of 72136634 in words is "seventy-two million, one hundred thirty-six thousand, six hundred thirty-four".