Search a number
-
+
15386142 = 238928813
BaseRepresentation
bin111010101100…
…011000011110
31001221200211010
4322230120132
512414324032
61305440050
7244531362
oct72543036
931850733
1015386142
118759922
1251a0026
133259335
1420872a2
15153dccc
hexeac61e

15386142 has 16 divisors (see below), whose sum is σ = 31119120. Its totient is φ = 5070912.

The previous prime is 15386123. The next prime is 15386167. The reversal of 15386142 is 24168351.

It is a congruent number.

It is an unprimeable number.

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, 13873 + ... + 14940.

It is an arithmetic number, because the mean of its divisors is an integer number (1944945).

Almost surely, 215386142 is an apocalyptic number.

15386142 is an abundant number, since it is smaller than the sum of its proper divisors (15732978).

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

15386142 is a wasteful number, since it uses less digits than its factorization.

15386142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28907.

The product of its digits is 5760, while the sum is 30.

The square root of 15386142 is about 3922.5173039771. The cubic root of 15386142 is about 248.7195435890.

It can be divided in two parts, 15386 and 142, that multiplied together give a palindrome (2184812).

The spelling of 15386142 in words is "fifteen million, three hundred eighty-six thousand, one hundred forty-two".

Divisors: 1 2 3 6 89 178 267 534 28813 57626 86439 172878 2564357 5128714 7693071 15386142