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12293090 = 251229309
BaseRepresentation
bin101110111001…
…001111100010
3212010112221122
4232321033202
511121334330
61115252242
7206326625
oct56711742
925115848
1012293090
116a36a87
12414a082
132715524
1418bddbc
15112c5e5
hexbb93e2

12293090 has 8 divisors (see below), whose sum is σ = 22127580. Its totient is φ = 4917232.

The previous prime is 12293089. The next prime is 12293107. The reversal of 12293090 is 9039221.

It can be written as a sum of positive squares in 2 ways, for example, as 12061729 + 231361 = 3473^2 + 481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×122930902 = 302240123496200, which contains 22 as substring.

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, 614645 + ... + 614664.

Almost surely, 212293090 is an apocalyptic number.

12293090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12293090 is a deficient number, since it is larger than the sum of its proper divisors (9834490).

12293090 is a wasteful number, since it uses less digits than its factorization.

12293090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229316.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 12293090 is about 3506.1503105258. The cubic root of 12293090 is about 230.7917890484.

The spelling of 12293090 in words is "twelve million, two hundred ninety-three thousand, ninety".

Divisors: 1 2 5 10 1229309 2458618 6146545 12293090