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13315830 = 2351140351
BaseRepresentation
bin110010110010…
…111011110110
3221001111212220
4302302323312
511402101310
61153223210
7221116443
oct62627366
927044786
1013315830
117575420
124561b06
1329b2bb8
141aa89ca
151280670
hexcb2ef6

13315830 has 32 divisors (see below), whose sum is σ = 34864128. Its totient is φ = 3228000.

The previous prime is 13315817. The next prime is 13315831. The reversal of 13315830 is 3851331.

It is a super-2 number, since 2×133158302 = 354622657177800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13315830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13315831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19846 + ... + 20505.

It is an arithmetic number, because the mean of its divisors is an integer number (1089504).

Almost surely, 213315830 is an apocalyptic number.

13315830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13315830 is an abundant number, since it is smaller than the sum of its proper divisors (21548298).

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

13315830 is a wasteful number, since it uses less digits than its factorization.

13315830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40372.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13315830 is about 3649.0861869789. The cubic root of 13315830 is about 237.0224123796.

The spelling of 13315830 in words is "thirteen million, three hundred fifteen thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 40351 80702 121053 201755 242106 403510 443861 605265 887722 1210530 1331583 2219305 2663166 4438610 6657915 13315830