72073320 has 64 divisors (see below), whose sum is σ = 235880640. Its totient is φ = 17472000.

The previous prime is 72073303. The next prime is 72073349. The reversal of 72073320 is 2337027.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25981 + ... + 28620.

It is an arithmetic number, because the mean of its divisors is an integer number (3685635).

Almost surely, 2^72073320 is an apocalyptic number.

It is an amenable number.

72073320 is an abundant number, since it is smaller than the sum of its proper divisors (163807320).

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

72073320 is a wasteful number, since it uses less digits than its factorization.

72073320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54626 (or 54622 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 72073320 is about 8489.6006973238. The cubic root of 72073320 is about 416.1579312825.

The spelling of 72073320 in words is "seventy-two million, seventy-three thousand, three hundred twenty".