72726732 has 36 divisors (see below), whose sum is σ = 197979600. Its totient is φ = 22377312.

The previous prime is 72726727. The next prime is 72726757. The reversal of 72726732 is 23762727.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 77232 + ... + 78167.

Almost surely, 2^72726732 is an apocalyptic number.

It is an amenable number.

72726732 is an abundant number, since it is smaller than the sum of its proper divisors (125252868).

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

72726732 is a wasteful number, since it uses less digits than its factorization.

72726732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155422 (or 155417 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 72726732 is about 8527.9969512190. The cubic root of 72726732 is about 417.4117699940.

The spelling of 72726732 in words is "seventy-two million, seven hundred twenty-six thousand, seven hundred thirty-two".