72684542 has 12 divisors (see below), whose sum is σ = 126827280. Its totient is φ = 31150476.

The previous prime is 72684541. The next prime is 72684559. The reversal of 72684542 is 24548627.

It is a junction number, because it is equal to n+sod(n) for n = 72684496 and 72684505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72684541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370742 + ... + 370937.

It is an arithmetic number, because the mean of its divisors is an integer number (10568940).

Almost surely, 2^72684542 is an apocalyptic number.

72684542 is a deficient number, since it is larger than the sum of its proper divisors (54142738).

72684542 is a wasteful number, since it uses less digits than its factorization.

72684542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741695 (or 741688 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 72684542 is about 8525.5229751611. The cubic root of 72684542 is about 417.3310385188.

The spelling of 72684542 in words is "seventy-two million, six hundred eighty-four thousand, five hundred forty-two".