72797808 has 40 divisors (see below), whose sum is σ = 199125648. Its totient is φ = 22838272.

The previous prime is 72797807. The next prime is 72797819. The reversal of 72797808 is 80879727.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72797807) by changing a digit.

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, 43791 + ... + 45422.

Almost surely, 2^72797808 is an apocalyptic number.

It is an amenable number.

72797808 is an abundant number, since it is smaller than the sum of its proper divisors (126327840).

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

72797808 is a wasteful number, since it uses less digits than its factorization.

72797808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89241 (or 89235 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 48.

The square root of 72797808 is about 8532.1631489324. The cubic root of 72797808 is about 417.5477048767.

The spelling of 72797808 in words is "seventy-two million, seven hundred ninety-seven thousand, eight hundred eight".