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15068131 = 131159087
BaseRepresentation
bin111001011110…
…101111100011
31001100112120221
4321132233203
512324140011
61254543511
7242035261
oct71365743
931315527
1015068131
118561a01
125067b97
133177670
142003431
1514c9971
hexe5ebe3

15068131 has 4 divisors (see below), whose sum is σ = 16227232. Its totient is φ = 13909032.

The previous prime is 15068107. The next prime is 15068161. The reversal of 15068131 is 13186051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13186051 = 41321611.

It is a cyclic number.

It is not a de Polignac number, because 15068131 - 211 = 15066083 is a prime.

It is a super-2 number, since 2×150681312 = 454097143666322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15068096 and 15068105.

It is not an unprimeable number, because it can be changed into a prime (15068101) 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, 579531 + ... + 579556.

It is an arithmetic number, because the mean of its divisors is an integer number (4056808).

Almost surely, 215068131 is an apocalyptic number.

15068131 is a deficient number, since it is larger than the sum of its proper divisors (1159101).

15068131 is a wasteful number, since it uses less digits than its factorization.

15068131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159100.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 15068131 is about 3881.7690554694. The cubic root of 15068131 is about 246.9940335230.

The spelling of 15068131 in words is "fifteen million, sixty-eight thousand, one hundred thirty-one".

Divisors: 1 13 1159087 15068131