72545386 has 24 divisors (see below), whose sum is σ = 113962464. Its totient is φ = 34609680.

The previous prime is 72545377. The next prime is 72545399. The reversal of 72545386 is 68354527.

Its product of digits (201600) is a multiple of the sum of its prime divisors (225).

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 11 ways as a sum of consecutive naturals, for example, 665500 + ... + 665608.

It is an arithmetic number, because the mean of its divisors is an integer number (4748436).

Almost surely, 2^72545386 is an apocalyptic number.

72545386 is a deficient number, since it is larger than the sum of its proper divisors (41417078).

72545386 is a wasteful number, since it uses less digits than its factorization.

72545386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 225 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 72545386 is about 8517.3579236756. The cubic root of 72545386 is about 417.0645388514.

The spelling of 72545386 in words is "seventy-two million, five hundred forty-five thousand, three hundred eighty-six".