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306390056 = 23712374423
BaseRepresentation
bin10010010000110…
…010010000101000
3210100112020010212
4102100302100220
51111413440211
650223000252
710410162320
oct2220622050
9710466125
10306390056
11147a49425
1286739088
134b6274bb
142c998280
151bd7238b
hex12432428

306390056 has 32 divisors (see below), whose sum is σ = 657229440. Its totient is φ = 131174208.

The previous prime is 306390037. The next prime is 306390059. The reversal of 306390056 is 650093603.

It is not an unprimeable number, because it can be changed into a prime (306390059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67061 + ... + 71483.

It is an arithmetic number, because the mean of its divisors is an integer number (20538420).

Almost surely, 2306390056 is an apocalyptic number.

It is an amenable number.

306390056 is an abundant number, since it is smaller than the sum of its proper divisors (350839384).

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

306390056 is a wasteful number, since it uses less digits than its factorization.

306390056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673 (or 5669 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 306390056 is about 17504.0011425959. The cubic root of 306390056 is about 674.1526127309.

The spelling of 306390056 in words is "three hundred six million, three hundred ninety thousand, fifty-six".

Divisors: 1 2 4 7 8 14 28 56 1237 2474 4423 4948 8659 8846 9896 17318 17692 30961 34636 35384 61922 69272 123844 247688 5471251 10942502 21885004 38298757 43770008 76597514 153195028 306390056