307072836 has 96 divisors (see below), whose sum is σ = 963406080. Its totient is φ = 82570752.

The previous prime is 307072817. The next prime is 307072837. The reversal of 307072836 is 638270703.

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

It is a self number, because there is not a number n which added to its sum of digits gives 307072836.

It is not an unprimeable number, because it can be changed into a prime (307072837) 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 31 ways as a sum of consecutive naturals, for example, 906 + ... + 24798.

It is an arithmetic number, because the mean of its divisors is an integer number (10035480).

Almost surely, 2^307072836 is an apocalyptic number.

307072836 is a gapful number since it is divisible by the number (36) 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 307072836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481703040).

307072836 is an abundant number, since it is smaller than the sum of its proper divisors (656333244).

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

307072836 is a wasteful number, since it uses less digits than its factorization.

307072836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23930 (or 23922 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 307072836 is about 17523.4938297133. The cubic root of 307072836 is about 674.6530167258.

The spelling of 307072836 in words is "three hundred seven million, seventy-two thousand, eight hundred thirty-six".