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13858980 = 22351912157
BaseRepresentation
bin110100110111…
…100010100100
3222002002221120
4310313202210
512021441410
61213013540
7225541122
oct64674244
928062846
1013858980
117906503
1247842b0
132b431a5
141baa912
15133b570
hexd378a4

13858980 has 48 divisors (see below), whose sum is σ = 40850880. Its totient is φ = 3500928.

The previous prime is 13858969. The next prime is 13858981. The reversal of 13858980 is 8985831.

13858980 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13858981) 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, 4939 + ... + 7218.

It is an arithmetic number, because the mean of its divisors is an integer number (851060).

Almost surely, 213858980 is an apocalyptic number.

13858980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13858980 is an abundant number, since it is smaller than the sum of its proper divisors (26991900).

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

13858980 is a wasteful number, since it uses less digits than its factorization.

13858980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12188 (or 12186 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 13858980 is about 3722.7651013729. The cubic root of 13858980 is about 240.2022600530.

The spelling of 13858980 in words is "thirteen million, eight hundred fifty-eight thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 12157 24314 36471 48628 60785 72942 121570 145884 182355 230983 243140 364710 461966 692949 729420 923932 1154915 1385898 2309830 2771796 3464745 4619660 6929490 13858980