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13308980 = 2256110909
BaseRepresentation
bin110010110001…
…010000110100
3221001011111012
4302301100310
511401341410
61153131352
7221060456
oct62612064
927034435
1013308980
117570263
124559b58
1329aca49
141aa62d6
15127d605
hexcb1434

13308980 has 24 divisors (see below), whose sum is σ = 28409640. Its totient is φ = 5235840.

The previous prime is 13308979. The next prime is 13308991. The reversal of 13308980 is 8980331.

It can be written as a sum of positive squares in 4 ways, for example, as 190096 + 13118884 = 436^2 + 3622^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4235 + ... + 6674.

It is an arithmetic number, because the mean of its divisors is an integer number (1183735).

Almost surely, 213308980 is an apocalyptic number.

13308980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13308980 is an abundant number, since it is smaller than the sum of its proper divisors (15100660).

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

13308980 is a wasteful number, since it uses less digits than its factorization.

13308980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10979 (or 10977 counting only the distinct ones).

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

The square root of 13308980 is about 3648.1474750892. The cubic root of 13308980 is about 236.9817619654.

The spelling of 13308980 in words is "thirteen million, three hundred eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 10909 21818 43636 54545 109090 218180 665449 1330898 2661796 3327245 6654490 13308980