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23081992 = 232885249
BaseRepresentation
bin101100000001…
…1010000001000
31121102200112121
41120003100020
521402110432
62142421024
7400123303
oct130032010
947380477
1023081992
111203592a
127891774
134a221ab
1430cbb3a
15205e197
hex1603408

23081992 has 8 divisors (see below), whose sum is σ = 43278750. Its totient is φ = 11540992.

The previous prime is 23081987. The next prime is 23082001. The reversal of 23081992 is 29918032.

It can be written as a sum of positive squares in only one way, i.e., 22714756 + 367236 = 4766^2 + 606^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1442617 + ... + 1442632.

Almost surely, 223081992 is an apocalyptic number.

It is an amenable number.

23081992 is a deficient number, since it is larger than the sum of its proper divisors (20196758).

23081992 is a wasteful number, since it uses less digits than its factorization.

23081992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885255 (or 2885251 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 23081992 is about 4804.3721754252. The cubic root of 23081992 is about 284.7242310434.

The spelling of 23081992 in words is "twenty-three million, eighty-one thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 2885249 5770498 11540996 23081992