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13803980 = 225787877
BaseRepresentation
bin110100101010…
…000111001100
3221222022111112
4310222013030
512013211410
61211511152
7225221561
oct64520714
927868445
1013803980
117879153
1247584b8
132b24148
141b94868
15132a105
hexd2a1cc

13803980 has 24 divisors (see below), whose sum is σ = 29058288. Its totient is φ = 5508288.

The previous prime is 13803961. The next prime is 13803991. The reversal of 13803980 is 8930831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15302 + ... + 16178.

It is an arithmetic number, because the mean of its divisors is an integer number (1210762).

Almost surely, 213803980 is an apocalyptic number.

13803980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13803980 is an abundant number, since it is smaller than the sum of its proper divisors (15254308).

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

13803980 is a wasteful number, since it uses less digits than its factorization.

13803980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 13803980 is about 3715.3707755754. The cubic root of 13803980 is about 239.8840875455.

The spelling of 13803980 in words is "thirteen million, eight hundred three thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 787 877 1574 1754 3148 3508 3935 4385 7870 8770 15740 17540 690199 1380398 2760796 3450995 6901990 13803980