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13353972 = 2231112831
BaseRepresentation
bin110010111100…
…001111110100
3221010110012120
4302330033310
511404311342
61154115540
7221335602
oct62741764
927113176
1013353972
1175a1045
12457bbb0
1329c7378
141ab8872
15128baec
hexcbc3f4

13353972 has 12 divisors (see below), whose sum is σ = 31159296. Its totient is φ = 4451320.

The previous prime is 13353947. The next prime is 13353973. The reversal of 13353972 is 27935331.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13353973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556404 + ... + 556427.

It is an arithmetic number, because the mean of its divisors is an integer number (2596608).

Almost surely, 213353972 is an apocalyptic number.

13353972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13353972 is an abundant number, since it is smaller than the sum of its proper divisors (17805324).

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

13353972 is a wasteful number, since it uses less digits than its factorization.

13353972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112838 (or 1112836 counting only the distinct ones).

The product of its digits is 17010, while the sum is 33.

The square root of 13353972 is about 3654.3086897524. The cubic root of 13353972 is about 237.2485064509.

The spelling of 13353972 in words is "thirteen million, three hundred fifty-three thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 1112831 2225662 3338493 4451324 6676986 13353972