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13026798 = 233317761
BaseRepresentation
bin110001101100…
…010111101110
3220111211102000
4301230113232
511313324143
61143113130
7215504001
oct61542756
926454360
1013026798
117398254
1244427a6
132911485
141a31538
151224bd3
hexc6c5ee

13026798 has 32 divisors (see below), whose sum is σ = 29077920. Its totient is φ = 4322880.

The previous prime is 13026781. The next prime is 13026821. The reversal of 13026798 is 89762031.

It is a super-2 number, since 2×130267982 = 339394932265608, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16738 + ... + 17498.

It is an arithmetic number, because the mean of its divisors is an integer number (908685).

Almost surely, 213026798 is an apocalyptic number.

13026798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13026798 is the 2283-rd heptagonal number.

13026798 is an abundant number, since it is smaller than the sum of its proper divisors (16051122).

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

13026798 is a wasteful number, since it uses less digits than its factorization.

13026798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1083 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 13026798 is about 3609.2655762634. The cubic root of 13026798 is about 235.2949247203.

It can be divided in two parts, 13026 and 798, that added together give a cube (13824 = 243).

The spelling of 13026798 in words is "thirteen million, twenty-six thousand, seven hundred ninety-eight".

Divisors: 1 2 3 6 9 18 27 54 317 634 761 951 1522 1902 2283 2853 4566 5706 6849 8559 13698 17118 20547 41094 241237 482474 723711 1447422 2171133 4342266 6513399 13026798