72530648 has 16 divisors (see below), whose sum is σ = 136275000. Its totient is φ = 36190656.

The previous prime is 72530603. The next prime is 72530651. The reversal of 72530648 is 84603527.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5093 + ... + 13076.

Almost surely, 2^72530648 is an apocalyptic number.

It is an amenable number.

72530648 is a deficient number, since it is larger than the sum of its proper divisors (63744352).

72530648 is a wasteful number, since it uses less digits than its factorization.

72530648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18674 (or 18670 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 72530648 is about 8516.4927053336. The cubic root of 72530648 is about 417.0362939424.

The spelling of 72530648 in words is "seventy-two million, five hundred thirty thousand, six hundred forty-eight".