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13302980 = 2253717977
BaseRepresentation
bin110010101111…
…110011000100
3221000212020222
4302233303010
511401143410
61153043512
7221034125
oct62576304
927025228
1013302980
1175667a9
124556598
1329aa0b2
141aa404c
15127b955
hexcafcc4

13302980 has 24 divisors (see below), whose sum is σ = 28692888. Its totient is φ = 5177088.

The previous prime is 13302973. The next prime is 13303001. The reversal of 13302980 is 8920331.

It can be written as a sum of positive squares in 4 ways, for example, as 3655744 + 9647236 = 1912^2 + 3106^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8249 + ... + 9728.

It is an arithmetic number, because the mean of its divisors is an integer number (1195537).

Almost surely, 213302980 is an apocalyptic number.

13302980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13302980 is an abundant number, since it is smaller than the sum of its proper divisors (15389908).

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

13302980 is a wasteful number, since it uses less digits than its factorization.

13302980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18023 (or 18021 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 13302980 is about 3647.3250472093. The cubic root of 13302980 is about 236.9461443023.

The spelling of 13302980 in words is "thirteen million, three hundred two thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 37 74 148 185 370 740 17977 35954 71908 89885 179770 359540 665149 1330298 2660596 3325745 6651490 13302980