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23378 = 211689
BaseRepresentation
bin101101101010010
31012001212
411231102
51222003
6300122
7125105
oct55522
935055
1023378
1116623
1211642
13a844
14873c
156dd8
hex5b52

23378 has 4 divisors (see below), whose sum is σ = 35070. Its totient is φ = 11688.

The previous prime is 23371. The next prime is 23399. The reversal of 23378 is 87332.

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

It can be written as a sum of positive squares in only one way, i.e., 12769 + 10609 = 113^2 + 103^2 .

It is a Curzon number.

It is a plaindrome in base 10.

It is a nialpdrome in base 8 and base 13.

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (23371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5843 + ... + 5846.

223378 is an apocalyptic number.

23378 is a deficient number, since it is larger than the sum of its proper divisors (11692).

23378 is a wasteful number, since it uses less digits than its factorization.

23378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11691.

The product of its digits is 1008, while the sum is 23.

The square root of 23378 is about 152.8986592485. The cubic root of 23378 is about 28.5936184761.

The spelling of 23378 in words is "twenty-three thousand, three hundred seventy-eight".

Divisors: 1 2 11689 23378