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13090280 = 235746751
BaseRepresentation
bin110001111011…
…110111101000
3220122001111012
4301323313220
511322342110
61144323052
7216160040
oct61736750
926561435
1013090280
117430a15
124473488
132934338
141a4a720
151238905
hexc7bde8

13090280 has 32 divisors (see below), whose sum is σ = 33661440. Its totient is φ = 4488000.

The previous prime is 13090261. The next prime is 13090283. The reversal of 13090280 is 8209031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13090283) 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, 23096 + ... + 23655.

It is an arithmetic number, because the mean of its divisors is an integer number (1051920).

Almost surely, 213090280 is an apocalyptic number.

13090280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13090280 is an abundant number, since it is smaller than the sum of its proper divisors (20571160).

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

13090280 is a wasteful number, since it uses less digits than its factorization.

13090280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46769 (or 46765 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 13090280 is about 3618.0491981177. The cubic root of 13090280 is about 235.6765174522.

The spelling of 13090280 in words is "thirteen million, ninety thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 46751 93502 187004 233755 327257 374008 467510 654514 935020 1309028 1636285 1870040 2618056 3272570 6545140 13090280