307491912 has 192 divisors, whose sum is σ = 1040981760. Its totient is φ = 79833600.

The previous prime is 307491887. The next prime is 307491929. The reversal of 307491912 is 219194703.

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

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 464862 + ... + 465522.

It is an arithmetic number, because the mean of its divisors is an integer number (5421780).

Almost surely, 2^307491912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307491912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520490880).

307491912 is an abundant number, since it is smaller than the sum of its proper divisors (733489848).

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

307491912 is a wasteful number, since it uses less digits than its factorization.

307491912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 307491912 is about 17535.4472996841. The cubic root of 307491912 is about 674.9597869048.

The spelling of 307491912 in words is "three hundred seven million, four hundred ninety-one thousand, nine hundred twelve".