Search a number
-
+
15238093 = 137316057
BaseRepresentation
bin111010001000…
…001111001101
31001200011201211
4322020033031
512400104333
61302334421
7243343633
oct72101715
931604654
1015238093
118668672
12512a411
133206b30
142049353
15150eecd
hexe883cd

15238093 has 8 divisors (see below), whose sum is σ = 16636088. Its totient is φ = 13872384.

The previous prime is 15238087. The next prime is 15238109. The reversal of 15238093 is 39083251.

It is a happy number.

15238093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 660969 + 14577124 = 813^2 + 3818^2 .

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 15238093 - 25 = 15238061 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 (15238063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7080 + ... + 8977.

It is an arithmetic number, because the mean of its divisors is an integer number (2079511).

Almost surely, 215238093 is an apocalyptic number.

15238093 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15238093 is a deficient number, since it is larger than the sum of its proper divisors (1397995).

15238093 is a wasteful number, since it uses less digits than its factorization.

15238093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16143.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 15238093 is about 3903.6000051235. The cubic root of 15238093 is about 247.9192255587.

The spelling of 15238093 in words is "fifteen million, two hundred thirty-eight thousand, ninety-three".

Divisors: 1 13 73 949 16057 208741 1172161 15238093