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22388 = 2229193
BaseRepresentation
bin101011101110100
31010201012
411131310
51204023
6251352
7122162
oct53564
933635
1022388
1115903
1210b58
13a262
148232
156978
hex5774

22388 has 12 divisors (see below), whose sum is σ = 40740. Its totient is φ = 10752.

The previous prime is 22381. The next prime is 22391. The reversal of 22388 is 88322.

It can be written as a sum of positive squares in 2 ways, for example, as 8464 + 13924 = 92^2 + 118^2 .

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22381) 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, 20 + ... + 212.

It is an arithmetic number, because the mean of its divisors is an integer number (3395).

222388 is an apocalyptic number.

It is an amenable number.

22388 is a deficient number, since it is larger than the sum of its proper divisors (18352).

22388 is a wasteful number, since it uses less digits than its factorization.

22388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 224 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 22388 is about 149.6262009141. The cubic root of 22388 is about 28.1841602443.

The spelling of 22388 in words is "twenty-two thousand, three hundred eighty-eight".

Divisors: 1 2 4 29 58 116 193 386 772 5597 11194 22388