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13039980 = 2235217333
BaseRepresentation
bin110001101111…
…100101101100
3220112111111020
4301233211230
511314234410
61143254140
7215560302
oct61574554
926474436
1013039980
1173a7148
12444a350
132917485
141a36272
151228a70
hexc6f96c

13039980 has 24 divisors (see below), whose sum is σ = 36512112. Its totient is φ = 3477312.

The previous prime is 13039973. The next prime is 13039981. The reversal of 13039980 is 8993031.

It is not an unprimeable number, because it can be changed into a prime (13039981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108607 + ... + 108726.

It is an arithmetic number, because the mean of its divisors is an integer number (1521338).

Almost surely, 213039980 is an apocalyptic number.

13039980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13039980 is an abundant number, since it is smaller than the sum of its proper divisors (23472132).

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

13039980 is a wasteful number, since it uses less digits than its factorization.

13039980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217345 (or 217343 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 13039980 is about 3611.0912478086. The cubic root of 13039980 is about 235.3742640453.

The spelling of 13039980 in words is "thirteen million, thirty-nine thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 217333 434666 651999 869332 1086665 1303998 2173330 2607996 3259995 4346660 6519990 13039980