306806620 has 24 divisors (see below), whose sum is σ = 653371488. Its totient is φ = 120993600.

The previous prime is 306806611. The next prime is 306806641. The reversal of 306806620 is 26608603.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106611 + ... + 109450.

It is an arithmetic number, because the mean of its divisors is an integer number (27223812).

Almost surely, 2^306806620 is an apocalyptic number.

It is an amenable number.

306806620 is an abundant number, since it is smaller than the sum of its proper divisors (346564868).

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

306806620 is a wasteful number, since it uses less digits than its factorization.

306806620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216141 (or 216139 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 306806620 is about 17515.8962088727. The cubic root of 306806620 is about 674.4579974625.

The spelling of 306806620 in words is "three hundred six million, eight hundred six thousand, six hundred twenty".