791215308 has 72 divisors (see below), whose sum is σ = 2204009808. Its totient is φ = 237783168.

The previous prime is 791215307. The next prime is 791215331. The reversal of 791215308 is 803512197.

It is a super-2 number, since 2×791215308² = 1252043327227069728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (791215301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 466 + ... + 39782.

Almost surely, 2^791215308 is an apocalyptic number.

791215308 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 791215308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102004904).

791215308 is an abundant number, since it is smaller than the sum of its proper divisors (1412794500).

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

791215308 is a wasteful number, since it uses less digits than its factorization.

791215308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39383 (or 39378 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 791215308 is about 28128.5496959939. The cubic root of 791215308 is about 924.9073422649.

It can be divided in two parts, 7912 and 15308, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 791215308 in words is "seven hundred ninety-one million, two hundred fifteen thousand, three hundred eight".