72821068 has 24 divisors (see below), whose sum is σ = 130460400. Its totient is φ = 35555520.

The previous prime is 72821057. The next prime is 72821071. The reversal of 72821068 is 86012827.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35355 + ... + 37357.

It is an arithmetic number, because the mean of its divisors is an integer number (5435850).

Almost surely, 2^72821068 is an apocalyptic number.

It is an amenable number.

72821068 is a deficient number, since it is larger than the sum of its proper divisors (57639332).

72821068 is a wasteful number, since it uses less digits than its factorization.

72821068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2215 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 72821068 is about 8533.5261176140. The cubic root of 72821068 is about 417.5921710755.

The spelling of 72821068 in words is "seventy-two million, eight hundred twenty-one thousand, sixty-eight".