309768046 has 8 divisors (see below), whose sum is σ = 531030960. Its totient is φ = 132757728.

The previous prime is 309768037. The next prime is 309768047. The reversal of 309768046 is 640867903.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 309767993 and 309768011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309768047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11063131 + ... + 11063158.

It is an arithmetic number, because the mean of its divisors is an integer number (66378870).

Almost surely, 2^309768046 is an apocalyptic number.

309768046 is a deficient number, since it is larger than the sum of its proper divisors (221262914).

309768046 is a wasteful number, since it uses less digits than its factorization.

309768046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22126298.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 309768046 is about 17600.2285780611. The cubic root of 309768046 is about 676.6211029471.

The spelling of 309768046 in words is "three hundred nine million, seven hundred sixty-eight thousand, forty-six".