72779852 has 6 divisors (see below), whose sum is σ = 127364748. Its totient is φ = 36389924.

The previous prime is 72779849. The next prime is 72779869. The reversal of 72779852 is 25897727.

It is a junction number, because it is equal to n+sod(n) for n = 72779797 and 72779806.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9097478 + ... + 9097485.

It is an arithmetic number, because the mean of its divisors is an integer number (21227458).

Almost surely, 2^72779852 is an apocalyptic number.

It is an amenable number.

72779852 is a deficient number, since it is larger than the sum of its proper divisors (54584896).

72779852 is a wasteful number, since it uses less digits than its factorization.

72779852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18194967 (or 18194965 counting only the distinct ones).

The product of its digits is 493920, while the sum is 47.

The square root of 72779852 is about 8531.1108303667. The cubic root of 72779852 is about 417.5133718690.

The spelling of 72779852 in words is "seventy-two million, seven hundred seventy-nine thousand, eight hundred fifty-two".