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23000438 = 211500219
BaseRepresentation
bin101011110111…
…1010101110110
31121021112200002
41113233111312
521342003223
62140551302
7366333446
oct127572566
947245602
1023000438
1111a8a62a
127852532
1349c4036
1430aa126
152044e28
hex15ef576

23000438 has 4 divisors (see below), whose sum is σ = 34500660. Its totient is φ = 11500218.

The previous prime is 23000429. The next prime is 23000447. The reversal of 23000438 is 83400032.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23000429) and next prime (23000447).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5750108 + ... + 5750111.

It is an arithmetic number, because the mean of its divisors is an integer number (8625165).

Almost surely, 223000438 is an apocalyptic number.

23000438 is a deficient number, since it is larger than the sum of its proper divisors (11500222).

23000438 is a wasteful number, since it uses less digits than its factorization.

23000438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500221.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 23000438 is about 4795.8771877520. The cubic root of 23000438 is about 284.3885032110.

The spelling of 23000438 in words is "twenty-three million, four hundred thirty-eight", and thus it is an aban number.

Divisors: 1 2 11500219 23000438