72726836 has 24 divisors (see below), whose sum is σ = 156643200. Its totient is φ = 28770912.

The previous prime is 72726821. The next prime is 72726869. The reversal of 72726836 is 63862727.

It is a junction number, because it is equal to n+sod(n) for n = 72726793 and 72726802.

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 in 7 ways as a sum of consecutive naturals, for example, 99536 + ... + 100263.

It is an arithmetic number, because the mean of its divisors is an integer number (6526800).

Almost surely, 2^72726836 is an apocalyptic number.

It is an amenable number.

72726836 is an abundant number, since it is smaller than the sum of its proper divisors (83916364).

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

72726836 is a wasteful number, since it uses less digits than its factorization.

72726836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199823 (or 199821 counting only the distinct ones).

The product of its digits is 169344, while the sum is 41.

The square root of 72726836 is about 8528.0030487799. The cubic root of 72726836 is about 417.4119689617.

The spelling of 72726836 in words is "seventy-two million, seven hundred twenty-six thousand, eight hundred thirty-six".