72828668 has 12 divisors (see below), whose sum is σ = 139036632. Its totient is φ = 33103920.

The previous prime is 72828661. The next prime is 72828683. The reversal of 72828668 is 86682827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72828661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827555 + ... + 827642.

It is an arithmetic number, because the mean of its divisors is an integer number (11586386).

Almost surely, 2^72828668 is an apocalyptic number.

It is an amenable number.

72828668 is a deficient number, since it is larger than the sum of its proper divisors (66207964).

72828668 is a wasteful number, since it uses less digits than its factorization.

72828668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655212 (or 1655210 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 72828668 is about 8533.9714084358. The cubic root of 72828668 is about 417.6066979617.

The spelling of 72828668 in words is "seventy-two million, eight hundred twenty-eight thousand, six hundred sixty-eight".