72423615 has 32 divisors (see below), whose sum is σ = 129839616. Its totient is φ = 34162560.

The previous prime is 72423601. The next prime is 72423647. The reversal of 72423615 is 51632427.

It is not a de Polignac number, because 72423615 - 2⁶ = 72423551 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174 + ... + 12036.

It is an arithmetic number, because the mean of its divisors is an integer number (4057488).

Almost surely, 2^72423615 is an apocalyptic number.

72423615 is a deficient number, since it is larger than the sum of its proper divisors (57416001).

72423615 is a wasteful number, since it uses less digits than its factorization.

72423615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11919.

The product of its digits is 10080, while the sum is 30.

The square root of 72423615 is about 8510.2065192332. The cubic root of 72423615 is about 416.8310537138.

The spelling of 72423615 in words is "seventy-two million, four hundred twenty-three thousand, six hundred fifteen".