72737650 has 24 divisors (see below), whose sum is σ = 135521460. Its totient is φ = 29045760.

The previous prime is 72737633. The next prime is 72737657. The reversal of 72737650 is 5673727.

It can be written as a sum of positive squares in 6 ways, for example, as 34210801 + 38526849 = 5849^2 + 6207^2 .

It is not an unprimeable number, because it can be changed into a prime (72737657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48106 + ... + 49594.

Almost surely, 2^72737650 is an apocalyptic number.

72737650 is a deficient number, since it is larger than the sum of its proper divisors (62783810).

72737650 is a wasteful number, since it uses less digits than its factorization.

72737650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478 (or 2473 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 72737650 is about 8528.6370540667. The cubic root of 72737650 is about 417.4326567370.

The spelling of 72737650 in words is "seventy-two million, seven hundred thirty-seven thousand, six hundred fifty".