72323934928 has 90 divisors (see below), whose sum is σ = 167517250866. Its totient is φ = 30139143552.

The previous prime is 72323934919. The next prime is 72323934937. The reversal of 72323934928 is 82943932327.

It is an interprime number because it is at equal distance from previous prime (72323934919) and next prime (72323934937).

It can be written as a sum of positive squares in only one way, i.e., 70369233984 + 1954700944 = 265272^2 + 44212^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45802843 + ... + 45804421.

Almost surely, 2^72323934928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72323934928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83758625433).

72323934928 is an abundant number, since it is smaller than the sum of its proper divisors (95193315938).

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

72323934928 is an equidigital number, since it uses as much as digits as its factorization.

72323934928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217 (or 1625 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 52.

The spelling of 72323934928 in words is "seventy-two billion, three hundred twenty-three million, nine hundred thirty-four thousand, nine hundred twenty-eight".