72150022 has 16 divisors (see below), whose sum is σ = 125533440. Its totient is φ = 30459528.

The previous prime is 72149983. The next prime is 72150047. The reversal of 72150022 is 22005127.

It is a congruent number.

It is an unprimeable number.

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, 37522 + ... + 39397.

It is an arithmetic number, because the mean of its divisors is an integer number (7845840).

Almost surely, 2^72150022 is an apocalyptic number.

72150022 is a deficient number, since it is larger than the sum of its proper divisors (53383418).

72150022 is a wasteful number, since it uses less digits than its factorization.

72150022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76995.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 72150022 is about 8494.1169052468. The cubic root of 72150022 is about 416.3055070612.

Adding to 72150022 its reverse (22005127), we get a palindrome (94155149).

The spelling of 72150022 in words is "seventy-two million, one hundred fifty thousand, twenty-two".