72380418 has 16 divisors (see below), whose sum is σ = 157921056. Its totient is φ = 21933440.

The previous prime is 72380411. The next prime is 72380419. The reversal of 72380418 is 81408327.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (72380411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548271 + ... + 548402.

It is an arithmetic number, because the mean of its divisors is an integer number (9870066).

Almost surely, 2^72380418 is an apocalyptic number.

72380418 is an abundant number, since it is smaller than the sum of its proper divisors (85540638).

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

72380418 is a wasteful number, since it uses less digits than its factorization.

72380418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096689.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 72380418 is about 8507.6681881700. The cubic root of 72380418 is about 416.7481643962.

The spelling of 72380418 in words is "seventy-two million, three hundred eighty thousand, four hundred eighteen".