Search a number
-
+
13905372 = 2231389137
BaseRepresentation
bin110101000010…
…110111011100
3222011110120210
4311002313130
512024432442
61214012420
7226123305
oct65026734
928143523
1013905372
117938348
1247a7110
132b5b340
141bbd7ac
15134a19c
hexd42ddc

13905372 has 24 divisors (see below), whose sum is σ = 34942096. Its totient is φ = 4278528.

The previous prime is 13905349. The next prime is 13905379. The reversal of 13905372 is 27350931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13905379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44413 + ... + 44724.

Almost surely, 213905372 is an apocalyptic number.

13905372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13905372 is an abundant number, since it is smaller than the sum of its proper divisors (21036724).

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

13905372 is a wasteful number, since it uses less digits than its factorization.

13905372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89157 (or 89155 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 13905372 is about 3728.9907481784. The cubic root of 13905372 is about 240.4699818315.

The spelling of 13905372 in words is "thirteen million, nine hundred five thousand, three hundred seventy-two".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 89137 178274 267411 356548 534822 1069644 1158781 2317562 3476343 4635124 6952686 13905372