72820626 has 16 divisors (see below), whose sum is σ = 146280000. Its totient is φ = 24167088.

The previous prime is 72820613. The next prime is 72820651. The reversal of 72820626 is 62602827.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 25126 + ... + 27873.

It is an arithmetic number, because the mean of its divisors is an integer number (9142500).

Almost surely, 2^72820626 is an apocalyptic number.

72820626 is an abundant number, since it is smaller than the sum of its proper divisors (73459374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72820626 is a wasteful number, since it uses less digits than its factorization.

72820626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53233.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 72820626 is about 8533.5002197223. The cubic root of 72820626 is about 417.5913261913.

The spelling of 72820626 in words is "seventy-two million, eight hundred twenty thousand, six hundred twenty-six".