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23076981 = 35234129
BaseRepresentation
bin101100000001…
…0000001110101
31121102102200000
41120002001311
521401430411
62142341513
7400102554
oct130020165
947372600
1023076981
1112032094
12788a899
134a1cb25
1430c9d9b
15205c956
hex1602075

23076981 has 24 divisors (see below), whose sum is σ = 36079680. Its totient is φ = 14712192.

The previous prime is 23076961. The next prime is 23076983. The reversal of 23076981 is 18967032.

It is not a de Polignac number, because 23076981 - 215 = 23044213 is a prime.

It is a super-2 number, since 2×230769812 = 1065094104148722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23076983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3525 + ... + 7653.

It is an arithmetic number, because the mean of its divisors is an integer number (1503320).

Almost surely, 223076981 is an apocalyptic number.

It is an amenable number.

23076981 is a deficient number, since it is larger than the sum of its proper divisors (13002699).

23076981 is an equidigital number, since it uses as much as digits as its factorization.

23076981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167 (or 4155 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 23076981 is about 4803.8506429738. The cubic root of 23076981 is about 284.7036254217.

The spelling of 23076981 in words is "twenty-three million, seventy-six thousand, nine hundred eighty-one".

Divisors: 1 3 9 23 27 69 81 207 243 621 1863 4129 5589 12387 37161 94967 111483 284901 334449 854703 1003347 2564109 7692327 23076981