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22470 = 2357107
BaseRepresentation
bin101011111000110
31010211020
411133012
51204340
6252010
7122340
oct53706
933736
1022470
1115978
1211006
13a2c6
148290
1569d0
hex57c6

22470 has 32 divisors (see below), whose sum is σ = 62208. Its totient is φ = 5088.

The previous prime is 22469. The next prime is 22481. The reversal of 22470 is 7422.

Adding to 22470 its reverse (7422), we get a palindrome (29892).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157 + ... + 263.

It is an arithmetic number, because the mean of its divisors is an integer number (1944).

222470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31104).

22470 is an abundant number, since it is smaller than the sum of its proper divisors (39738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22470 is a wasteful number, since it uses less digits than its factorization.

22470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 22470 is about 149.8999666444. The cubic root of 22470 is about 28.2185281387.

The spelling of 22470 in words is "twenty-two thousand, four hundred seventy", and thus it is an iban number.

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 107 210 214 321 535 642 749 1070 1498 1605 2247 3210 3745 4494 7490 11235 22470