72566528 has 18 divisors (see below), whose sum is σ = 144850104. Its totient is φ = 36283136.

The previous prime is 72566467. The next prime is 72566537. The reversal of 72566528 is 82566527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141476 + ... + 141987.

It is an arithmetic number, because the mean of its divisors is an integer number (8047228).

Almost surely, 2^72566528 is an apocalyptic number.

It is an amenable number.

72566528 is a deficient number, since it is larger than the sum of its proper divisors (72283576).

72566528 is an equidigital number, since it uses as much as digits as its factorization.

72566528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283479 (or 283465 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 72566528 is about 8518.5989458361. The cubic root of 72566528 is about 417.1050501438.

Subtracting 72566528 from its reverse (82566527), we obtain a palindrome (9999999).

The spelling of 72566528 in words is "seventy-two million, five hundred sixty-six thousand, five hundred twenty-eight".