306243772 has 24 divisors (see below), whose sum is σ = 546423696. Its totient is φ = 150150528.

The previous prime is 306243731. The next prime is 306243779. The reversal of 306243772 is 277342603.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306243779) 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, 42118 + ... + 48850.

It is an arithmetic number, because the mean of its divisors is an integer number (22767654).

Almost surely, 2^306243772 is an apocalyptic number.

It is an amenable number.

306243772 is a deficient number, since it is larger than the sum of its proper divisors (240179924).

306243772 is a wasteful number, since it uses less digits than its factorization.

306243772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6957 (or 6955 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 306243772 is about 17499.8220562382. The cubic root of 306243772 is about 674.0453056802.

The spelling of 306243772 in words is "three hundred six million, two hundred forty-three thousand, seven hundred seventy-two".