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13915090 = 2571371451
BaseRepresentation
bin110101000101…
…001111010010
3222011221220201
4311011033102
512030240330
61214125414
7226163530
oct65051722
928157821
1013915090
117944682
1247b086a
132b628a7
141bc3150
15134ceca
hexd453d2

13915090 has 32 divisors (see below), whose sum is σ = 28854144. Its totient is φ = 4732800.

The previous prime is 13915081. The next prime is 13915117. The reversal of 13915090 is 9051931.

13915090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8865 + ... + 10315.

It is an arithmetic number, because the mean of its divisors is an integer number (901692).

Almost surely, 213915090 is an apocalyptic number.

13915090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13915090 is an abundant number, since it is smaller than the sum of its proper divisors (14939054).

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

13915090 is a wasteful number, since it uses less digits than its factorization.

13915090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 13915090 is about 3730.2935541322. The cubic root of 13915090 is about 240.5259875993.

The spelling of 13915090 in words is "thirteen million, nine hundred fifteen thousand, ninety".

Divisors: 1 2 5 7 10 14 35 70 137 274 685 959 1370 1451 1918 2902 4795 7255 9590 10157 14510 20314 50785 101570 198787 397574 993935 1391509 1987870 2783018 6957545 13915090