72220002 has 16 divisors (see below), whose sum is σ = 145411200. Its totient is φ = 23911472.

The previous prime is 72219991. The next prime is 72220009. The reversal of 72220002 is 20002227.

It is not an unprimeable number, because it can be changed into a prime (72220009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39498 + ... + 41285.

It is an arithmetic number, because the mean of its divisors is an integer number (9088200).

Almost surely, 2^72220002 is an apocalyptic number.

72220002 is an abundant number, since it is smaller than the sum of its proper divisors (73191198).

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

72220002 is a wasteful number, since it uses less digits than its factorization.

72220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80937.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 72220002 is about 8498.2352285636. The cubic root of 72220002 is about 416.4400583970.

Adding to 72220002 its reverse (20002227), we get a palindrome (92222229).

The spelling of 72220002 in words is "seventy-two million, two hundred twenty thousand, two".