Search a number
-
+
15384893 = 5325477
BaseRepresentation
bin111010101100…
…000100111101
31001221122002212
4322230010331
512414304033
61305430205
7244524626
oct72540475
931848085
1015384893
118758997
12519b365
1332588b4
142086a4d
15153d748
hexeac13d

15384893 has 6 divisors (see below), whose sum is σ = 15683514. Its totient is φ = 15091856.

The previous prime is 15384869. The next prime is 15384913. The reversal of 15384893 is 39848351.

It can be written as a sum of positive squares in 3 ways, for example, as 10903204 + 4481689 = 3302^2 + 2117^2 .

It is not a de Polignac number, because 15384893 - 26 = 15384829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15384893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15384293) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 71 + ... + 5547.

It is an arithmetic number, because the mean of its divisors is an integer number (2613919).

Almost surely, 215384893 is an apocalyptic number.

It is an amenable number.

15384893 is a deficient number, since it is larger than the sum of its proper divisors (298621).

15384893 is an frugal number, since it uses more digits than its factorization.

15384893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5583 (or 5530 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 15384893 is about 3922.3580917606. The cubic root of 15384893 is about 248.7128133093.

The spelling of 15384893 in words is "fifteen million, three hundred eighty-four thousand, eight hundred ninety-three".

Divisors: 1 53 2809 5477 290281 15384893