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13313272 = 237237737
BaseRepresentation
bin110010110010…
…010011111000
3221001101101011
4302302103320
511402011042
61153203304
7221106130
oct62622370
927041334
1013313272
117573505
124560534
1329b199b
141aa7ac0
15127ea17
hexcb24f8

13313272 has 16 divisors (see below), whose sum is σ = 28528560. Its totient is φ = 5705664.

The previous prime is 13313269. The next prime is 13313309. The reversal of 13313272 is 27231331.

It is a happy number.

13313272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×133132722 = 354486422691968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118813 + ... + 118924.

It is an arithmetic number, because the mean of its divisors is an integer number (1783035).

Almost surely, 213313272 is an apocalyptic number.

It is an amenable number.

13313272 is an abundant number, since it is smaller than the sum of its proper divisors (15215288).

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

13313272 is a wasteful number, since it uses less digits than its factorization.

13313272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237750 (or 237746 counting only the distinct ones).

The product of its digits is 756, while the sum is 22.

The square root of 13313272 is about 3648.7356714347. The cubic root of 13313272 is about 237.0072339000.

The spelling of 13313272 in words is "thirteen million, three hundred thirteen thousand, two hundred seventy-two".

Divisors: 1 2 4 7 8 14 28 56 237737 475474 950948 1664159 1901896 3328318 6656636 13313272