72122700 has 72 divisors (see below), whose sum is σ = 224739088. Its totient is φ = 17752320.

The previous prime is 72122683. The next prime is 72122707. The reversal of 72122700 is 722127.

It is not an unprimeable number, because it can be changed into a prime (72122707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5347 + ... + 13146.

Almost surely, 2^72122700 is an apocalyptic number.

It is an amenable number.

72122700 is an abundant number, since it is smaller than the sum of its proper divisors (152616388).

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

72122700 is a wasteful number, since it uses less digits than its factorization.

72122700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18523 (or 18516 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 72122700 is about 8492.5084633458. The cubic root of 72122700 is about 416.2529511284.

Adding to 72122700 its reverse (722127), we get a palindrome (72844827).

The spelling of 72122700 in words is "seventy-two million, one hundred twenty-two thousand, seven hundred".