Search a number
-
+
13380437 = 731197313
BaseRepresentation
bin110011000010…
…101101010101
3221011210111202
4303002231111
511411133222
61154442245
7221506010
oct63025525
927153452
1013380437
117609a14
124593385
132a06425
141ac4377
151294892
hexcc2b55

13380437 has 16 divisors (see below), whose sum is σ = 15916032. Its totient is φ = 11007360.

The previous prime is 13380413. The next prime is 13380461. The reversal of 13380437 is 73408331.

13380437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13380413) and next prime (13380461).

It is a de Polignac number, because none of the positive numbers 2k-13380437 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 (13380487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42593 + ... + 42905.

It is an arithmetic number, because the mean of its divisors is an integer number (994752).

Almost surely, 213380437 is an apocalyptic number.

It is an amenable number.

13380437 is a deficient number, since it is larger than the sum of its proper divisors (2535595).

13380437 is a wasteful number, since it uses less digits than its factorization.

13380437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 13380437 is about 3657.9279653924. The cubic root of 13380437 is about 237.4051299760.

Adding to 13380437 its reverse (73408331), we get a palindrome (86788768).

The spelling of 13380437 in words is "thirteen million, three hundred eighty thousand, four hundred thirty-seven".

Divisors: 1 7 31 197 217 313 1379 2191 6107 9703 42749 61661 67921 431627 1911491 13380437