72758792 has 8 divisors (see below), whose sum is σ = 136422750. Its totient is φ = 36379392.

The previous prime is 72758789. The next prime is 72758797. The reversal of 72758792 is 29785727.

It can be written as a sum of positive squares in only one way, i.e., 38019556 + 34739236 = 6166^2 + 5894^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (72758797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4547417 + ... + 4547432.

Almost surely, 2^72758792 is an apocalyptic number.

It is an amenable number.

72758792 is a deficient number, since it is larger than the sum of its proper divisors (63663958).

72758792 is a wasteful number, since it uses less digits than its factorization.

72758792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9094855 (or 9094851 counting only the distinct ones).

The product of its digits is 493920, while the sum is 47.

The square root of 72758792 is about 8529.8764352129. The cubic root of 72758792 is about 417.4730966206.

The spelling of 72758792 in words is "seventy-two million, seven hundred fifty-eight thousand, seven hundred ninety-two".