72576628 has 6 divisors (see below), whose sum is σ = 127009106. Its totient is φ = 36288312.

The previous prime is 72576619. The next prime is 72576629. The reversal of 72576628 is 82667527.

It can be written as a sum of positive squares in only one way, i.e., 63648484 + 8928144 = 7978^2 + 2988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72576629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9072075 + ... + 9072082.

Almost surely, 2^72576628 is an apocalyptic number.

It is an amenable number.

72576628 is a deficient number, since it is larger than the sum of its proper divisors (54432478).

72576628 is a wasteful number, since it uses less digits than its factorization.

72576628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18144161 (or 18144159 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 72576628 is about 8519.1917456998. The cubic root of 72576628 is about 417.1244005050.

The spelling of 72576628 in words is "seventy-two million, five hundred seventy-six thousand, six hundred twenty-eight".