72394545 has 16 divisors (see below), whose sum is σ = 116424000. Its totient is φ = 38412864.

The previous prime is 72394537. The next prime is 72394559. The reversal of 72394545 is 54549327.

It is not a de Polignac number, because 72394545 - 2³ = 72394537 is a prime.

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, 9295 + ... + 15204.

It is an arithmetic number, because the mean of its divisors is an integer number (7276500).

Almost surely, 2^72394545 is an apocalyptic number.

It is an amenable number.

72394545 is a deficient number, since it is larger than the sum of its proper divisors (44029455).

72394545 is a wasteful number, since it uses less digits than its factorization.

72394545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24704.

The product of its digits is 151200, while the sum is 39.

The square root of 72394545 is about 8508.4983986600. The cubic root of 72394545 is about 416.7752758650.

The spelling of 72394545 in words is "seventy-two million, three hundred ninety-four thousand, five hundred forty-five".