306402844 has 12 divisors (see below), whose sum is σ = 584950968. Its totient is φ = 139274000.

The previous prime is 306402841. The next prime is 306402857. The reversal of 306402844 is 448204603.

It is a super-2 number, since 2×306402844² = 187765405622576672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306402841) 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, 3481807 + ... + 3481894.

It is an arithmetic number, because the mean of its divisors is an integer number (48745914).

Almost surely, 2^306402844 is an apocalyptic number.

It is an amenable number.

306402844 is a deficient number, since it is larger than the sum of its proper divisors (278548124).

306402844 is a wasteful number, since it uses less digits than its factorization.

306402844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963716 (or 6963714 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 306402844 is about 17504.3664266948. The cubic root of 306402844 is about 674.1619917816.

The spelling of 306402844 in words is "three hundred six million, four hundred two thousand, eight hundred forty-four".