72394534 has 32 divisors (see below), whose sum is σ = 118195200. Its totient is φ = 33129600.

The previous prime is 72394529. The next prime is 72394537. The reversal of 72394534 is 43549327.

It is a junction number, because it is equal to n+sod(n) for n = 72394493 and 72394502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72394537) by changing a digit.

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, 302787 + ... + 303025.

It is an arithmetic number, because the mean of its divisors is an integer number (3693600).

Almost surely, 2^72394534 is an apocalyptic number.

72394534 is a deficient number, since it is larger than the sum of its proper divisors (45800666).

72394534 is a wasteful number, since it uses less digits than its factorization.

72394534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its digits is 90720, while the sum is 37.

The square root of 72394534 is about 8508.4977522475. The cubic root of 72394534 is about 416.7752547560.

The spelling of 72394534 in words is "seventy-two million, three hundred ninety-four thousand, five hundred thirty-four".