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13249197 = 331337747
BaseRepresentation
bin110010100010…
…101010101101
3220221010111000
4302202222231
511342433242
61151550513
7220421253
oct62425255
926833430
1013249197
11752a355
12452b439
13298b780
141a8c5d3
15126aa4c
hexca2aad

13249197 has 16 divisors (see below), whose sum is σ = 21138880. Its totient is φ = 8153136.

The previous prime is 13249189. The next prime is 13249237. The reversal of 13249197 is 79194231.

13249197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13249197 - 23 = 13249189 is a prime.

It is a super-2 number, since 2×132491972 = 351082442289618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13249147) 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, 18523 + ... + 19224.

It is an arithmetic number, because the mean of its divisors is an integer number (1321180).

Almost surely, 213249197 is an apocalyptic number.

It is an amenable number.

13249197 is a deficient number, since it is larger than the sum of its proper divisors (7889683).

13249197 is a wasteful number, since it uses less digits than its factorization.

13249197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37769 (or 37763 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 13249197 is about 3639.9446424362. The cubic root of 13249197 is about 236.6263942142.

The spelling of 13249197 in words is "thirteen million, two hundred forty-nine thousand, one hundred ninety-seven".

Divisors: 1 3 9 13 27 39 117 351 37747 113241 339723 490711 1019169 1472133 4416399 13249197