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23078128 = 244730689
BaseRepresentation
bin101100000001…
…0010011110000
31121102111020111
41120002103300
521402000003
62142351104
7400106113
oct130022360
947374214
1023078128
1112032a37
12788b494
134a204c8
1430ca57a
15205ce6d
hex16024f0

23078128 has 20 divisors (see below), whose sum is σ = 45666720. Its totient is φ = 11293184.

The previous prime is 23078123. The next prime is 23078137. The reversal of 23078128 is 82187032.

It is a self number, because there is not a number n which added to its sum of digits gives 23078128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23078123) 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, 14593 + ... + 16096.

It is an arithmetic number, because the mean of its divisors is an integer number (2283336).

Almost surely, 223078128 is an apocalyptic number.

It is an amenable number.

23078128 is a deficient number, since it is larger than the sum of its proper divisors (22588592).

23078128 is a wasteful number, since it uses less digits than its factorization.

23078128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30744 (or 30738 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 23078128 is about 4803.9700248857. The cubic root of 23078128 is about 284.7083422381.

The spelling of 23078128 in words is "twenty-three million, seventy-eight thousand, one hundred twenty-eight".

Divisors: 1 2 4 8 16 47 94 188 376 752 30689 61378 122756 245512 491024 1442383 2884766 5769532 11539064 23078128