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13862140 = 2251740771
BaseRepresentation
bin110100111000…
…010011111100
3222002021021121
4310320103330
512022042030
61213040324
7225553255
oct64702374
928067247
1013862140
117908916
1247860a4
132b44766
141babb2c
15133c47a
hexd384fc

13862140 has 24 divisors (see below), whose sum is σ = 30823632. Its totient is φ = 5218560.

The previous prime is 13862137. The next prime is 13862143. The reversal of 13862140 is 4126831.

It is an interprime number because it is at equal distance from previous prime (13862137) and next prime (13862143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13862143) 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 7 ways as a sum of consecutive naturals, for example, 20046 + ... + 20725.

It is an arithmetic number, because the mean of its divisors is an integer number (1284318).

Almost surely, 213862140 is an apocalyptic number.

13862140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13862140 is an abundant number, since it is smaller than the sum of its proper divisors (16961492).

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

13862140 is a wasteful number, since it uses less digits than its factorization.

13862140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40797 (or 40795 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 13862140 is about 3723.1894928945. The cubic root of 13862140 is about 240.2205149187.

Adding to 13862140 its reverse (4126831), we get a palindrome (17988971).

The spelling of 13862140 in words is "thirteen million, eight hundred sixty-two thousand, one hundred forty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 40771 81542 163084 203855 407710 693107 815420 1386214 2772428 3465535 6931070 13862140