72734416 has 10 divisors (see below), whose sum is σ = 140922962. Its totient is φ = 36367200.

The previous prime is 72734411. The next prime is 72734419. The reversal of 72734416 is 61443727.

It can be written as a sum of positive squares in only one way, i.e., 72250000 + 484416 = 8500^2 + 696^2 .

It is a super-2 number, since 2×72734416² = 10580590541722112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72734411) by changing a digit.

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 as a sum of consecutive naturals, namely, 2272935 + ... + 2272966.

Almost surely, 2^72734416 is an apocalyptic number.

It is an amenable number.

72734416 is a deficient number, since it is larger than the sum of its proper divisors (68188546).

72734416 is a wasteful number, since it uses less digits than its factorization.

72734416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545909 (or 4545903 counting only the distinct ones).

The product of its digits is 28224, while the sum is 34.

The square root of 72734416 is about 8528.4474554282. The cubic root of 72734416 is about 417.4264701325.

The spelling of 72734416 in words is "seventy-two million, seven hundred thirty-four thousand, four hundred sixteen".