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18890482 = 213255889
BaseRepresentation
bin100100000001…
…1111011110010
31022112201212111
41020003323302
514313443412
61512515534
7316365202
oct110037362
938481774
1018890482
11a732776
1263abbaa
133bb5400
14271a402
1519d22a7
hex1203ef2

18890482 has 12 divisors (see below), whose sum is σ = 30683610. Its totient is φ = 8718528.

The previous prime is 18890479. The next prime is 18890507. The reversal of 18890482 is 28409881.

It can be written as a sum of positive squares in 3 ways, for example, as 13549761 + 5340721 = 3681^2 + 2311^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27607 + ... + 28282.

Almost surely, 218890482 is an apocalyptic number.

18890482 is a deficient number, since it is larger than the sum of its proper divisors (11793128).

18890482 is a wasteful number, since it uses less digits than its factorization.

18890482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55917 (or 55904 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 18890482 is about 4346.3182120043. The cubic root of 18890482 is about 266.3264783570.

The spelling of 18890482 in words is "eighteen million, eight hundred ninety thousand, four hundred eighty-two".

Divisors: 1 2 13 26 169 338 55889 111778 726557 1453114 9445241 18890482