Search a number
-
+
23072369 = 161914251
BaseRepresentation
bin101100000000…
…0111001110001
31121102012100012
41120000321301
521401303434
62142304305
7400053245
oct130007161
947365305
1023072369
1112029681
127888095
134a1a9b8
1430c8425
15205b3ce
hex1600e71

23072369 has 4 divisors (see below), whose sum is σ = 23088240. Its totient is φ = 23056500.

The previous prime is 23072341. The next prime is 23072389. The reversal of 23072369 is 96327032.

It is a happy number.

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 23072369 - 216 = 23006833 is a prime.

It is a super-2 number, since 2×230723692 = 1064668422544322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23072389) 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, 5507 + ... + 8744.

It is an arithmetic number, because the mean of its divisors is an integer number (5772060).

Almost surely, 223072369 is an apocalyptic number.

It is an amenable number.

23072369 is a deficient number, since it is larger than the sum of its proper divisors (15871).

23072369 is a wasteful number, since it uses less digits than its factorization.

23072369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15870.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 23072369 is about 4803.3705874105. The cubic root of 23072369 is about 284.6846578828.

The spelling of 23072369 in words is "twenty-three million, seventy-two thousand, three hundred sixty-nine".

Divisors: 1 1619 14251 23072369