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13162870 = 257226863
BaseRepresentation
bin110010001101…
…100101110110
3220202202001201
4302031211312
511332202440
61150043114
7216611500
oct62154566
926682051
1013162870
117480506
1244a949a
13295b3a6
141a68d70
15125019a
hexc8d976

13162870 has 24 divisors (see below), whose sum is σ = 27562464. Its totient is φ = 4512816.

The previous prime is 13162783. The next prime is 13162871. The reversal of 13162870 is 7826131.

It is a super-2 number, since 2×131628702 = 346522293273800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13162871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12942 + ... + 13921.

It is an arithmetic number, because the mean of its divisors is an integer number (1148436).

Almost surely, 213162870 is an apocalyptic number.

13162870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13162870 is an abundant number, since it is smaller than the sum of its proper divisors (14399594).

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

13162870 is a wasteful number, since it uses less digits than its factorization.

13162870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26884 (or 26877 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13162870 is about 3628.0669784336. The cubic root of 13162870 is about 236.1113498293. Note that the first 3 decimals are identical.

It can be divided in two parts, 1316 and 2870, that added together give a triangular number (4186 = T91).

The spelling of 13162870 in words is "thirteen million, one hundred sixty-two thousand, eight hundred seventy".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 26863 53726 134315 188041 268630 376082 940205 1316287 1880410 2632574 6581435 13162870