72802791 has 12 divisors (see below), whose sum is σ = 108002232. Its totient is φ = 47223216.

The previous prime is 72802783. The next prime is 72802799. The reversal of 72802791 is 19720827.

It is an interprime number because it is at equal distance from previous prime (72802783) and next prime (72802799).

It is not a de Polignac number, because 72802791 - 2³ = 72802783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72802799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108981 + ... + 109646.

It is an arithmetic number, because the mean of its divisors is an integer number (9000186).

Almost surely, 2^72802791 is an apocalyptic number.

72802791 is a deficient number, since it is larger than the sum of its proper divisors (35199441).

72802791 is a wasteful number, since it uses less digits than its factorization.

72802791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218670 (or 218667 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 72802791 is about 8532.4551566357. The cubic root of 72802791 is about 417.5572316871.

The spelling of 72802791 in words is "seventy-two million, eight hundred two thousand, seven hundred ninety-one".