72211968 has 60 divisors (see below), whose sum is σ = 208421928. Its totient is φ = 24069120.

The previous prime is 72211967. The next prime is 72211987. The reversal of 72211968 is 86911227.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72211963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3228 + ... + 12443.

Almost surely, 2^72211968 is an apocalyptic number.

It is an amenable number.

72211968 is an abundant number, since it is smaller than the sum of its proper divisors (136209960).

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

72211968 is a wasteful number, since it uses less digits than its factorization.

72211968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15695 (or 15676 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 72211968 is about 8497.7625290426. The cubic root of 72211968 is about 416.4246157523.

The spelling of 72211968 in words is "seventy-two million, two hundred eleven thousand, nine hundred sixty-eight".