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13872133 = 112295507
BaseRepresentation
bin110100111010…
…110000000101
3222002202222201
4310322300011
512022402013
61213154501
7225624352
oct64726005
928082881
1013872133
117915380
12478ba31
132b49182
141bb1629
1513403dd
hexd3ac05

13872133 has 8 divisors (see below), whose sum is σ = 15202080. Its totient is φ = 12553680.

The previous prime is 13872113. The next prime is 13872137. The reversal of 13872133 is 33127831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13872133 - 29 = 13871621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872137) 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 7 ways as a sum of consecutive naturals, for example, 235 + ... + 5272.

It is an arithmetic number, because the mean of its divisors is an integer number (1900260).

Almost surely, 213872133 is an apocalyptic number.

It is an amenable number.

13872133 is a deficient number, since it is larger than the sum of its proper divisors (1329947).

13872133 is a wasteful number, since it uses less digits than its factorization.

13872133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747.

The product of its digits is 3024, while the sum is 28.

The square root of 13872133 is about 3724.5312456737. The cubic root of 13872133 is about 240.2782247914.

Adding to 13872133 its reverse (33127831), we get a palindrome (46999964).

The spelling of 13872133 in words is "thirteen million, eight hundred seventy-two thousand, one hundred thirty-three".

Divisors: 1 11 229 2519 5507 60577 1261103 13872133