Search a number
-
+
15380893 = 111398263
BaseRepresentation
bin111010101011…
…000110011101
31001221102121201
4322223012131
512414142033
61305355501
7244510153
oct72530635
931842551
1015380893
118755990
125198b91
133256b28
1420853d3
15153c47d
hexeab19d

15380893 has 4 divisors (see below), whose sum is σ = 16779168. Its totient is φ = 13982620.

The previous prime is 15380879. The next prime is 15380917. The reversal of 15380893 is 39808351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15380893 - 213 = 15372701 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 (15380803) 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, 699121 + ... + 699142.

It is an arithmetic number, because the mean of its divisors is an integer number (4194792).

Almost surely, 215380893 is an apocalyptic number.

It is an amenable number.

15380893 is a deficient number, since it is larger than the sum of its proper divisors (1398275).

15380893 is a wasteful number, since it uses less digits than its factorization.

15380893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398274.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 15380893 is about 3921.8481612627. The cubic root of 15380893 is about 248.6912567194.

The spelling of 15380893 in words is "fifteen million, three hundred eighty thousand, eight hundred ninety-three".

Divisors: 1 11 1398263 15380893