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612980 = 22530649
BaseRepresentation
bin10010101101001110100
31011010211222
42111221310
5124103410
621045512
75132054
oct2255164
91133758
10612980
113895a5
12256898
13186014
1411d564
15c1955
hex95a74

612980 has 12 divisors (see below), whose sum is σ = 1287300. Its totient is φ = 245184.

The previous prime is 612977. The next prime is 613007. The reversal of 612980 is 89216.

612980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 88804 + 524176 = 298^2 + 724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15305 + ... + 15344.

It is an arithmetic number, because the mean of its divisors is an integer number (107275).

2612980 is an apocalyptic number.

It is an amenable number.

612980 is an abundant number, since it is smaller than the sum of its proper divisors (674320).

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

612980 is a wasteful number, since it uses less digits than its factorization.

612980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30658 (or 30656 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 612980 is about 782.9303928192. The cubic root of 612980 is about 84.9471412995.

The spelling of 612980 in words is "six hundred twelve thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 30649 61298 122596 153245 306490 612980