72786650 has 24 divisors (see below), whose sum is σ = 137104320. Its totient is φ = 28744560.

The previous prime is 72786647. The next prime is 72786661. The reversal of 72786650 is 5668727.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72786598 and 72786607.

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 11 ways as a sum of consecutive naturals, for example, 5264 + ... + 13163.

It is an arithmetic number, because the mean of its divisors is an integer number (5712680).

Almost surely, 2^72786650 is an apocalyptic number.

72786650 is a deficient number, since it is larger than the sum of its proper divisors (64317670).

72786650 is a wasteful number, since it uses less digits than its factorization.

72786650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18518 (or 18513 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 72786650 is about 8531.5092451453. The cubic root of 72786650 is about 417.5263707392.

The spelling of 72786650 in words is "seventy-two million, seven hundred eighty-six thousand, six hundred fifty".