72723120 has 40 divisors (see below), whose sum is σ = 225442416. Its totient is φ = 19392768.

The previous prime is 72723113. The next prime is 72723137. The reversal of 72723120 is 2132727.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 151267 + ... + 151746.

Almost surely, 2^72723120 is an apocalyptic number.

It is an amenable number.

72723120 is an abundant number, since it is smaller than the sum of its proper divisors (152719296).

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

72723120 is a wasteful number, since it uses less digits than its factorization.

72723120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303029 (or 303023 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 72723120 is about 8527.7851755306. The cubic root of 72723120 is about 417.4048595764.

Adding to 72723120 its reverse (2132727), we get a palindrome (74855847).

The spelling of 72723120 in words is "seventy-two million, seven hundred twenty-three thousand, one hundred twenty".