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18064490 = 252337753
BaseRepresentation
bin100010011101…
…0010001101010
31020222202211012
41010322101222
514111030430
61443103522
7306355103
oct104722152
936882735
1018064490
11a219134
126071ba2
133986462
1425833aa
1518bc695
hex113a46a

18064490 has 16 divisors (see below), whose sum is σ = 32659848. Its totient is φ = 7193856.

The previous prime is 18064481. The next prime is 18064511. The reversal of 18064490 is 9446081.

It can be written as a sum of positive squares in 4 ways, for example, as 16834609 + 1229881 = 4103^2 + 1109^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547 + ... + 6206.

Almost surely, 218064490 is an apocalyptic number.

18064490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18064490 is a deficient number, since it is larger than the sum of its proper divisors (14595358).

18064490 is a wasteful number, since it uses less digits than its factorization.

18064490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 18064490 is about 4250.2341111991. The cubic root of 18064490 is about 262.3867508461.

The spelling of 18064490 in words is "eighteen million, sixty-four thousand, four hundred ninety".

Divisors: 1 2 5 10 233 466 1165 2330 7753 15506 38765 77530 1806449 3612898 9032245 18064490