306464040 has 64 divisors (see below), whose sum is σ = 1021550400. Its totient is φ = 81723456.

The previous prime is 306464009. The next prime is 306464063. The reversal of 306464040 is 40464603.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 306463995 and 306464013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140802 + ... + 142961.

It is an arithmetic number, because the mean of its divisors is an integer number (15961725).

Almost surely, 2^306464040 is an apocalyptic number.

306464040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

306464040 is an abundant number, since it is smaller than the sum of its proper divisors (715086360).

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

306464040 is a wasteful number, since it uses less digits than its factorization.

306464040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283783 (or 283773 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 306464040 is about 17506.1143604170. The cubic root of 306464040 is about 674.2068709026.

The spelling of 306464040 in words is "three hundred six million, four hundred sixty-four thousand, forty".