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22472 = 23532
BaseRepresentation
bin101011111001000
31010211022
411133020
51204342
6252012
7122342
oct53710
933738
1022472
111597a
1211008
13a2c8
148292
1569d2
hex57c8

22472 has 12 divisors (see below), whose sum is σ = 42945. Its totient is φ = 11024.

The previous prime is 22469. The next prime is 22481. The reversal of 22472 is 27422.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 21316 + 1156 = 146^2 + 34^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=106.

It is a Duffinian number.

Its product of digits (224) is a multiple of the sum of its prime factors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 22472.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 398 + ... + 450.

222472 is an apocalyptic number.

It is an amenable number.

22472 is a deficient number, since it is larger than the sum of its proper divisors (20473).

22472 is an equidigital number, since it uses as much as digits as its factorization.

22472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 55 counting only the distinct ones).

The product of its digits is 224, while the sum is 17.

The square root of 22472 is about 149.9066376115. The cubic root of 22472 is about 28.2193653347.

The spelling of 22472 in words is "twenty-two thousand, four hundred seventy-two", and is thus an iban number.

Divisors: 1 2 4 8 53 106 212 424 2809 5618 11236 22472