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23120769 = 376118049
BaseRepresentation
bin101100000110…
…0101110000001
31121111122201210
41120030232001
521404331034
62143320333
7400344330
oct130145601
947448653
1023120769
1112061a81
1278b00a9
134a36a39
1430dbd17
15206a8e9
hex160cb81

23120769 has 16 divisors (see below), whose sum is σ = 35811200. Its totient is φ = 12994560.

The previous prime is 23120749. The next prime is 23120789. The reversal of 23120769 is 96702132.

It is an interprime number because it is at equal distance from previous prime (23120749) and next prime (23120789).

It is not a de Polignac number, because 23120769 - 25 = 23120737 is a prime.

It is a super-2 number, since 2×231207692 = 1069139918302722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23120749) 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, 7744 + ... + 10305.

It is an arithmetic number, because the mean of its divisors is an integer number (2238200).

Almost surely, 223120769 is an apocalyptic number.

It is an amenable number.

23120769 is a deficient number, since it is larger than the sum of its proper divisors (12690431).

23120769 is a wasteful number, since it uses less digits than its factorization.

23120769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18120.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 23120769 is about 4808.4060768616. The cubic root of 23120769 is about 284.8835843402.

The spelling of 23120769 in words is "twenty-three million, one hundred twenty thousand, seven hundred sixty-nine".

Divisors: 1 3 7 21 61 183 427 1281 18049 54147 126343 379029 1100989 3302967 7706923 23120769