306663740 has 24 divisors (see below), whose sum is σ = 651233520. Its totient is φ = 121286528.

The previous prime is 306663739. The next prime is 306663803. The reversal of 306663740 is 47366603.

It is a self number, because there is not a number n which added to its sum of digits gives 306663740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84362 + ... + 87921.

It is an arithmetic number, because the mean of its divisors is an integer number (27134730).

Almost surely, 2^306663740 is an apocalyptic number.

It is an amenable number.

306663740 is an abundant number, since it is smaller than the sum of its proper divisors (344569780).

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

306663740 is a wasteful number, since it uses less digits than its factorization.

306663740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172381 (or 172379 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 306663740 is about 17511.8171529970. The cubic root of 306663740 is about 674.3532827273.

The spelling of 306663740 in words is "three hundred six million, six hundred sixty-three thousand, seven hundred forty".