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13113020 = 225655651
BaseRepresentation
bin110010000001…
…011010111100
3220200012200102
4302001122330
511324104040
61145020232
7216313244
oct62013274
926605612
1013113020
117447008
124484678
1329417ab
141a54b24
151240515
hexc816bc

13113020 has 12 divisors (see below), whose sum is σ = 27537384. Its totient is φ = 5245200.

The previous prime is 13113011. The next prime is 13113029. The reversal of 13113020 is 2031131.

It is an interprime number because it is at equal distance from previous prime (13113011) and next prime (13113029).

It is a junction number, because it is equal to n+sod(n) for n = 13112992 and 13113010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327806 + ... + 327845.

It is an arithmetic number, because the mean of its divisors is an integer number (2294782).

Almost surely, 213113020 is an apocalyptic number.

13113020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13113020 is an abundant number, since it is smaller than the sum of its proper divisors (14424364).

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

13113020 is a wasteful number, since it uses less digits than its factorization.

13113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655660 (or 655658 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13113020 is about 3621.1904120054. The cubic root of 13113020 is about 235.8129083131.

Adding to 13113020 its reverse (2031131), we get a palindrome (15144151).

The spelling of 13113020 in words is "thirteen million, one hundred thirteen thousand, twenty".

Divisors: 1 2 4 5 10 20 655651 1311302 2622604 3278255 6556510 13113020