72722154 has 16 divisors (see below), whose sum is σ = 146317248. Its totient is φ = 24095232.

The previous prime is 72722129. The next prime is 72722173. The reversal of 72722154 is 45122727.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35287 + ... + 37290.

It is an arithmetic number, because the mean of its divisors is an integer number (9144828).

Almost surely, 2^72722154 is an apocalyptic number.

72722154 is an abundant number, since it is smaller than the sum of its proper divisors (73595094).

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

72722154 is a wasteful number, since it uses less digits than its factorization.

72722154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72749.

The product of its digits is 7840, while the sum is 30.

The square root of 72722154 is about 8527.7285369552. The cubic root of 72722154 is about 417.4030114027.

The spelling of 72722154 in words is "seventy-two million, seven hundred twenty-two thousand, one hundred fifty-four".