306040620 has 48 divisors (see below), whose sum is σ = 857945088. Its totient is φ = 81512640.

The previous prime is 306040597. The next prime is 306040621. The reversal of 306040620 is 26040603.

It is a super-2 number, since 2×306040620² = 187321722179968800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (306040621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56887 + ... + 62033.

It is an arithmetic number, because the mean of its divisors is an integer number (17873856).

Almost surely, 2^306040620 is an apocalyptic number.

306040620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

306040620 is an abundant number, since it is smaller than the sum of its proper divisors (551904468).

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

306040620 is a wasteful number, since it uses less digits than its factorization.

306040620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150 (or 6148 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 306040620 is about 17494.0166914291. The cubic root of 306040620 is about 673.8962262488.

The spelling of 306040620 in words is "three hundred six million, forty thousand, six hundred twenty".