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23880989 = 117927481
BaseRepresentation
bin101101100011…
…0010100011101
31122221021120002
41123012110131
522103142424
62211504045
7406661606
oct133062435
948837502
1023880989
1112531160
127bb8025
134c41a82
143258dad
15216acae
hex16c651d

23880989 has 8 divisors (see below), whose sum is σ = 26382720. Its totient is φ = 21434400.

The previous prime is 23880917. The next prime is 23881027. The reversal of 23880989 is 98908832.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23880989 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 (23880889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12872 + ... + 14609.

It is an arithmetic number, because the mean of its divisors is an integer number (3297840).

Almost surely, 223880989 is an apocalyptic number.

It is an amenable number.

23880989 is a deficient number, since it is larger than the sum of its proper divisors (2501731).

23880989 is a wasteful number, since it uses less digits than its factorization.

23880989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27571.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 23880989 is about 4886.8178807891. The cubic root of 23880989 is about 287.9723361095.

The spelling of 23880989 in words is "twenty-three million, eight hundred eighty thousand, nine hundred eighty-nine".

Divisors: 1 11 79 869 27481 302291 2170999 23880989