72377220 has 48 divisors (see below), whose sum is σ = 203652288. Its totient is φ = 19205760.

The previous prime is 72377191. The next prime is 72377257. The reversal of 72377220 is 2277327.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 9802 + ... + 15518.

It is an arithmetic number, because the mean of its divisors is an integer number (4242756).

Almost surely, 2^72377220 is an apocalyptic number.

It is an amenable number.

72377220 is an abundant number, since it is smaller than the sum of its proper divisors (131275068).

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

72377220 is a wasteful number, since it uses less digits than its factorization.

72377220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5940 (or 5938 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 30.

The square root of 72377220 is about 8507.4802380023. The cubic root of 72377220 is about 416.7420265471.

The spelling of 72377220 in words is "seventy-two million, three hundred seventy-seven thousand, two hundred twenty".