72100022 has 16 divisors (see below), whose sum is σ = 114125760. Its totient is φ = 34067592.

The previous prime is 72099997. The next prime is 72100027. The reversal of 72100022 is 22000127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72100027) 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 7 ways as a sum of consecutive naturals, for example, 14693 + ... + 18975.

It is an arithmetic number, because the mean of its divisors is an integer number (7132860).

Almost surely, 2^72100022 is an apocalyptic number.

72100022 is a deficient number, since it is larger than the sum of its proper divisors (42025738).

72100022 is a wasteful number, since it uses less digits than its factorization.

72100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 72100022 is about 8491.1731816045. The cubic root of 72100022 is about 416.2093181992.

Adding to 72100022 its reverse (22000127), we get a palindrome (94100149).

The spelling of 72100022 in words is "seventy-two million, one hundred thousand, twenty-two".