72643154 has 16 divisors (see below), whose sum is σ = 114542208. Its totient is φ = 34485792.

The previous prime is 72643147. The next prime is 72643169. The reversal of 72643154 is 45134627.

It is a self number, because there is not a number n which added to its sum of digits gives 72643154.

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, 539 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (7158888).

Almost surely, 2^72643154 is an apocalyptic number.

72643154 is a deficient number, since it is larger than the sum of its proper divisors (41899054).

72643154 is a wasteful number, since it uses less digits than its factorization.

72643154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11689.

The product of its digits is 20160, while the sum is 32.

The square root of 72643154 is about 8523.0953297496. The cubic root of 72643154 is about 417.2518113268.

The spelling of 72643154 in words is "seventy-two million, six hundred forty-three thousand, one hundred fifty-four".