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307446680 = 23512760521
BaseRepresentation
bin10010010100110…
…100001110011000
3210102111220120002
4102110310032120
51112201243210
650301352132
710422153002
oct2224641630
9712456502
10307446680
11148600272
1286b68648
134b907418
142cb91372
151bed04a5
hex12534398

307446680 has 32 divisors (see below), whose sum is σ = 697213440. Its totient is φ = 122008320.

The previous prime is 307446679. The next prime is 307446701. The reversal of 307446680 is 86644703.

It is a happy number.

307446680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3074466802 = 189046922086044800, which contains 22 as substring.

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, 25181 + ... + 35340.

It is an arithmetic number, because the mean of its divisors is an integer number (21787920).

Almost surely, 2307446680 is an apocalyptic number.

It is an amenable number.

307446680 is an abundant number, since it is smaller than the sum of its proper divisors (389766760).

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

307446680 is a wasteful number, since it uses less digits than its factorization.

307446680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60659 (or 60655 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 307446680 is about 17534.1575218201. The cubic root of 307446680 is about 674.9266897977.

The spelling of 307446680 in words is "three hundred seven million, four hundred forty-six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 127 254 508 635 1016 1270 2540 5080 60521 121042 242084 302605 484168 605210 1210420 2420840 7686167 15372334 30744668 38430835 61489336 76861670 153723340 307446680