309764046 has 16 divisors (see below), whose sum is σ = 646464384. Its totient is φ = 98765304.

The previous prime is 309764027. The next prime is 309764047. The reversal of 309764046 is 640467903.

It is a junction number, because it is equal to n+sod(n) for n = 309763995 and 309764013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309764047) 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, 1122196 + ... + 1122471.

It is an arithmetic number, because the mean of its divisors is an integer number (40404024).

Almost surely, 2^309764046 is an apocalyptic number.

309764046 is an abundant number, since it is smaller than the sum of its proper divisors (336700338).

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

309764046 is a wasteful number, since it uses less digits than its factorization.

309764046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244695.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 309764046 is about 17600.1149428065. The cubic root of 309764046 is about 676.6181905572.

The spelling of 309764046 in words is "three hundred nine million, seven hundred sixty-four thousand, forty-six".