309425704 has 32 divisors (see below), whose sum is σ = 702060480. Its totient is φ = 124809984.

The previous prime is 309425651. The next prime is 309425707. The reversal of 309425704 is 407524903.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 309425704.

It is not an unprimeable number, because it can be changed into a prime (309425707) 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, 161562 + ... + 163465.

It is an arithmetic number, because the mean of its divisors is an integer number (21939390).

Almost surely, 2^309425704 is an apocalyptic number.

309425704 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

309425704 is an abundant number, since it is smaller than the sum of its proper divisors (392634776).

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

309425704 is a wasteful number, since it uses less digits than its factorization.

309425704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325057 (or 325053 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 309425704 is about 17590.5003908360. The cubic root of 309425704 is about 676.3717537881.

The spelling of 309425704 in words is "three hundred nine million, four hundred twenty-five thousand, seven hundred four".