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13213380 = 22351911153
BaseRepresentation
bin110010011001…
…111011000100
3220212022100110
4302121323010
511340312010
61151113020
7220211655
oct62317304
926768313
1013213380
117505454
124512770
13297838b
141a7d52c
151260120
hexc99ec4

13213380 has 48 divisors (see below), whose sum is σ = 37223424. Its totient is φ = 3502080.

The previous prime is 13213363. The next prime is 13213391. The reversal of 13213380 is 8331231.

It is a happy number.

13213380 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×132133802 = 349186822048800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10884 + ... + 12036.

It is an arithmetic number, because the mean of its divisors is an integer number (775488).

Almost surely, 213213380 is an apocalyptic number.

13213380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13213380 is an abundant number, since it is smaller than the sum of its proper divisors (24010044).

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

13213380 is a wasteful number, since it uses less digits than its factorization.

13213380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13213380 is about 3635.0213204327. The cubic root of 13213380 is about 236.4129750867.

The spelling of 13213380 in words is "thirteen million, two hundred thirteen thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 191 382 573 764 955 1146 1153 1910 2292 2306 2865 3459 3820 4612 5730 5765 6918 11460 11530 13836 17295 23060 34590 69180 220223 440446 660669 880892 1101115 1321338 2202230 2642676 3303345 4404460 6606690 13213380