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13015930 = 252356591
BaseRepresentation
bin110001101001…
…101101111010
3220111021111111
4301221231322
511313002210
61142550534
7215430214
oct61515572
926437444
1013015930
117390074
12443844a
132909545
141a2b5b4
15122188a
hexc69b7a

13015930 has 16 divisors (see below), whose sum is σ = 24447744. Its totient is φ = 4979920.

The previous prime is 13015921. The next prime is 13015943. The reversal of 13015930 is 3951031.

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, 28066 + ... + 28525.

It is an arithmetic number, because the mean of its divisors is an integer number (1527984).

Almost surely, 213015930 is an apocalyptic number.

13015930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13015930 is a deficient number, since it is larger than the sum of its proper divisors (11431814).

13015930 is a wasteful number, since it uses less digits than its factorization.

13015930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56621.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 13015930 is about 3607.7596926625. The cubic root of 13015930 is about 235.2294725473.

Adding to 13015930 its reverse (3951031), we get a palindrome (16966961).

The spelling of 13015930 in words is "thirteen million, fifteen thousand, nine hundred thirty".

Divisors: 1 2 5 10 23 46 115 230 56591 113182 282955 565910 1301593 2603186 6507965 13015930