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13157396 = 227469907
BaseRepresentation
bin110010001100…
…010000010100
3220202110112222
4302030100110
511332014041
61150001512
7216556520
oct62142024
926673488
1013157396
11747738a
1244a6298
132958a55
141a66d80
15124d74b
hexc8c414

13157396 has 12 divisors (see below), whose sum is σ = 26314848. Its totient is φ = 5638872.

The previous prime is 13157383. The next prime is 13157399. The reversal of 13157396 is 69375131.

13157396 is an admirable number.

It is a super-3 number, since 3×131573963 (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13157399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234926 + ... + 234981.

It is an arithmetic number, because the mean of its divisors is an integer number (2192904).

Almost surely, 213157396 is an apocalyptic number.

It is an amenable number.

13157396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13157396 is a wasteful number, since it uses less digits than its factorization.

13157396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469918 (or 469916 counting only the distinct ones).

The product of its digits is 17010, while the sum is 35.

The square root of 13157396 is about 3627.3125037691. The cubic root of 13157396 is about 236.0786150044.

The spelling of 13157396 in words is "thirteen million, one hundred fifty-seven thousand, three hundred ninety-six".

Divisors: 1 2 4 7 14 28 469907 939814 1879628 3289349 6578698 13157396