72797718 has 16 divisors (see below), whose sum is σ = 166394880. Its totient is φ = 20799336.

The previous prime is 72797713. The next prime is 72797731. The reversal of 72797718 is 81779727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72797713) 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, 866598 + ... + 866681.

It is an arithmetic number, because the mean of its divisors is an integer number (10399680).

Almost surely, 2^72797718 is an apocalyptic number.

72797718 is an abundant number, since it is smaller than the sum of its proper divisors (93597162).

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

72797718 is a wasteful number, since it uses less digits than its factorization.

72797718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733291.

The product of its digits is 345744, while the sum is 48.

The square root of 72797718 is about 8532.1578747700. The cubic root of 72797718 is about 417.5475328051.

Subtracting 72797718 from its reverse (81779727), we obtain a square (8982009 = 2997²).

The spelling of 72797718 in words is "seventy-two million, seven hundred ninety-seven thousand, seven hundred eighteen".