72727796 has 6 divisors (see below), whose sum is σ = 127273650. Its totient is φ = 36363896.

The previous prime is 72727789. The next prime is 72727807. The reversal of 72727796 is 69772727.

It can be written as a sum of positive squares in only one way, i.e., 63425296 + 9302500 = 7964^2 + 3050^2 .

It is a super-2 number, since 2×72727796² = 10578664622035232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72727796.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9090971 + ... + 9090978.

It is an arithmetic number, because the mean of its divisors is an integer number (21212275).

Almost surely, 2^72727796 is an apocalyptic number.

It is an amenable number.

72727796 is a deficient number, since it is larger than the sum of its proper divisors (54545854).

72727796 is a wasteful number, since it uses less digits than its factorization.

72727796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18181953 (or 18181951 counting only the distinct ones).

The product of its digits is 518616, while the sum is 47.

The square root of 72727796 is about 8528.0593337523. The cubic root of 72727796 is about 417.4138055773.

The spelling of 72727796 in words is "seventy-two million, seven hundred twenty-seven thousand, seven hundred ninety-six".