72622522 has 32 divisors (see below), whose sum is σ = 135290880. Its totient is φ = 28531440.

The previous prime is 72622499. The next prime is 72622547. The reversal of 72622522 is 22522627.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 3843 + ... + 12649.

It is an arithmetic number, because the mean of its divisors is an integer number (4227840).

Almost surely, 2^72622522 is an apocalyptic number.

72622522 is a deficient number, since it is larger than the sum of its proper divisors (62668358).

72622522 is a wasteful number, since it uses less digits than its factorization.

72622522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8866.

The product of its digits is 6720, while the sum is 28.

The square root of 72622522 is about 8521.8848853995. The cubic root of 72622522 is about 417.2123051746.

The spelling of 72622522 in words is "seventy-two million, six hundred twenty-two thousand, five hundred twenty-two".