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23000449 = 200311483
BaseRepresentation
bin101011110111…
…1010110000001
31121021112200111
41113233112001
521342003244
62140551321
7366333463
oct127572601
947245614
1023000449
1111a8a63a
127852541
1349c4044
1430aa133
152044e34
hex15ef581

23000449 has 4 divisors (see below), whose sum is σ = 23013936. Its totient is φ = 22986964.

The previous prime is 23000447. The next prime is 23000459. The reversal of 23000449 is 94400032.

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 23000449 - 21 = 23000447 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23000447) 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, 3739 + ... + 7744.

It is an arithmetic number, because the mean of its divisors is an integer number (5753484).

Almost surely, 223000449 is an apocalyptic number.

It is an amenable number.

23000449 is a deficient number, since it is larger than the sum of its proper divisors (13487).

23000449 is a wasteful number, since it uses less digits than its factorization.

23000449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13486.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23000449 is about 4795.8783345702. The cubic root of 23000449 is about 284.3885485474.

The spelling of 23000449 in words is "twenty-three million, four hundred forty-nine", and thus it is an aban number.

Divisors: 1 2003 11483 23000449