72122330 has 32 divisors (see below), whose sum is σ = 157095936. Its totient is φ = 23272704.

The previous prime is 72122329. The next prime is 72122341. The reversal of 72122330 is 3322127.

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, 29114 + ... + 31493.

It is an arithmetic number, because the mean of its divisors is an integer number (4909248).

Almost surely, 2^72122330 is an apocalyptic number.

72122330 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72122330 is an abundant number, since it is smaller than the sum of its proper divisors (84973606).

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

72122330 is a wasteful number, since it uses less digits than its factorization.

72122330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60638.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 72122330 is about 8492.4866794126. The cubic root of 72122330 is about 416.2522393144.

Adding to 72122330 its reverse (3322127), we get a palindrome (75444457).

The spelling of 72122330 in words is "seventy-two million, one hundred twenty-two thousand, three hundred thirty".