72653542 has 32 divisors (see below), whose sum is σ = 120466080. Its totient is φ = 32659200.

The previous prime is 72653521. The next prime is 72653561. The reversal of 72653542 is 24535627.

It is a junction number, because it is equal to n+sod(n) for n = 72653498 and 72653507.

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 15 ways as a sum of consecutive naturals, for example, 191509 + ... + 191887.

It is an arithmetic number, because the mean of its divisors is an integer number (3764565).

Almost surely, 2^72653542 is an apocalyptic number.

72653542 is a deficient number, since it is larger than the sum of its proper divisors (47812538).

72653542 is a wasteful number, since it uses less digits than its factorization.

72653542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its digits is 50400, while the sum is 34.

The square root of 72653542 is about 8523.7047109810. The cubic root of 72653542 is about 417.2716994374.

The spelling of 72653542 in words is "seventy-two million, six hundred fifty-three thousand, five hundred forty-two".