Search a number
-
+
23407349 = 749749
BaseRepresentation
bin101100101001…
…0101011110101
31122001012211212
41121102223311
521443013344
62153411205
7402650000
oct131225365
948035755
1023407349
1112238319
127a09b05
134b07304
143174537
1520c579e
hex1652af5

23407349 has 10 divisors (see below), whose sum is σ = 27309750. Its totient is φ = 20061384.

The previous prime is 23407339. The next prime is 23407357. The reversal of 23407349 is 94370432.

It can be written as a sum of positive squares in only one way, i.e., 16144324 + 7263025 = 4018^2 + 2695^2 .

It is a de Polignac number, because none of the positive numbers 2k-23407349 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 (23407309) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2474 + ... + 7275.

It is an arithmetic number, because the mean of its divisors is an integer number (2730975).

Almost surely, 223407349 is an apocalyptic number.

It is an amenable number.

23407349 is a deficient number, since it is larger than the sum of its proper divisors (3902401).

23407349 is an frugal number, since it uses more digits than its factorization.

23407349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9777 (or 9756 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 23407349 is about 4838.1141987349. The cubic root of 23407349 is about 286.0557905408.

The spelling of 23407349 in words is "twenty-three million, four hundred seven thousand, three hundred forty-nine".

Divisors: 1 7 49 343 2401 9749 68243 477701 3343907 23407349