309250164 has 24 divisors (see below), whose sum is σ = 722449728. Its totient is φ = 102959680.

The previous prime is 309250163. The next prime is 309250189. The reversal of 309250164 is 461052903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309250163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4752 + ... + 25319.

It is an arithmetic number, because the mean of its divisors is an integer number (30102072).

Almost surely, 2^309250164 is an apocalyptic number.

It is an amenable number.

309250164 is an abundant number, since it is smaller than the sum of its proper divisors (413199564).

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

309250164 is a wasteful number, since it uses less digits than its factorization.

309250164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30935 (or 30933 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 309250164 is about 17585.5100579995. The cubic root of 309250164 is about 676.2438256560.

The spelling of 309250164 in words is "three hundred nine million, two hundred fifty thousand, one hundred sixty-four".