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13876420 = 2251740813
BaseRepresentation
bin110100111011…
…110011000100
3222002222212111
4310323303010
512023021140
61213230404
7225643015
oct64736304
928088774
1013876420
117918618
124792404
132b4b0cc
141bb300c
1513417ea
hexd3bcc4

13876420 has 24 divisors (see below), whose sum is σ = 30855384. Its totient is φ = 5223936.

The previous prime is 13876399. The next prime is 13876433. The reversal of 13876420 is 2467831.

It can be written as a sum of positive squares in 4 ways, for example, as 7795264 + 6081156 = 2792^2 + 2466^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20067 + ... + 20746.

It is an arithmetic number, because the mean of its divisors is an integer number (1285641).

Almost surely, 213876420 is an apocalyptic number.

13876420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13876420 is an abundant number, since it is smaller than the sum of its proper divisors (16978964).

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

13876420 is a wasteful number, since it uses less digits than its factorization.

13876420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40839 (or 40837 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 13876420 is about 3725.1067098809. The cubic root of 13876420 is about 240.3029738491.

The spelling of 13876420 in words is "thirteen million, eight hundred seventy-six thousand, four hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 40813 81626 163252 204065 408130 693821 816260 1387642 2775284 3469105 6938210 13876420