Search a number
-
+
23019269 = 721336137
BaseRepresentation
bin101011111001…
…1111100000101
31121022111111112
41113303330011
521343104034
62141214405
7366442400
oct127637405
947274445
1023019269
1111aa2799
127861405
1349cc790
1430b2d37
15204a7ce
hex15f3f05

23019269 has 12 divisors (see below), whose sum is σ = 28838124. Its totient is φ = 18212544.

The previous prime is 23019247. The next prime is 23019277. The reversal of 23019269 is 96291032.

It can be written as a sum of positive squares in 2 ways, for example, as 8196769 + 14822500 = 2863^2 + 3850^2 .

It is not a de Polignac number, because 23019269 - 220 = 21970693 is a prime.

It is a super-2 number, since 2×230192692 = 1059773490588722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23019229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17432 + ... + 18705.

It is an arithmetic number, because the mean of its divisors is an integer number (2403177).

Almost surely, 223019269 is an apocalyptic number.

It is an amenable number.

23019269 is a deficient number, since it is larger than the sum of its proper divisors (5818855).

23019269 is a wasteful number, since it uses less digits than its factorization.

23019269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36164 (or 36157 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 23019269 is about 4797.8400348490. The cubic root of 23019269 is about 284.4660938937.

The spelling of 23019269 in words is "twenty-three million, nineteen thousand, two hundred sixty-nine".

Divisors: 1 7 13 49 91 637 36137 252959 469781 1770713 3288467 23019269