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307952080 = 2453849401
BaseRepresentation
bin10010010110101…
…111100111010000
3210110110120211121
4102112233213100
51112313431310
650320252024
710426356322
oct2226574720
9713416747
10307952080
11148915a57
1287171014
134ba53487
142cc83612
151c0800da
hex125af9d0

307952080 has 20 divisors (see below), whose sum is σ = 715988772. Its totient is φ = 123180800.

The previous prime is 307952069. The next prime is 307952081. The reversal of 307952080 is 80259703.

It can be written as a sum of positive squares in 2 ways, for example, as 80425024 + 227527056 = 8968^2 + 15084^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307952081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924621 + ... + 1924780.

Almost surely, 2307952080 is an apocalyptic number.

It is an amenable number.

307952080 is an abundant number, since it is smaller than the sum of its proper divisors (408036692).

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

307952080 is a wasteful number, since it uses less digits than its factorization.

307952080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849414 (or 3849408 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 307952080 is about 17548.5634739713. The cubic root of 307952080 is about 675.2963161755.

The spelling of 307952080 in words is "three hundred seven million, nine hundred fifty-two thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 3849401 7698802 15397604 19247005 30795208 38494010 61590416 76988020 153976040 307952080