Search a number
-
+
22263581 = 131169951
BaseRepresentation
bin101010011101…
…1011100011101
31112220002220002
41110323130131
521144413311
62113104045
7360144254
oct124733435
945802802
1022263581
1111626a5a
127558025
1347c6822
142d5779b
151e4b93b
hex153b71d

22263581 has 4 divisors (see below), whose sum is σ = 22433664. Its totient is φ = 22093500.

The previous prime is 22263569. The next prime is 22263583. The reversal of 22263581 is 18536222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22263581 - 222 = 18069277 is a prime.

It is a super-2 number, since 2×222635812 = 991334077887122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22263583) 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, 84845 + ... + 85106.

It is an arithmetic number, because the mean of its divisors is an integer number (5608416).

Almost surely, 222263581 is an apocalyptic number.

It is an amenable number.

22263581 is a deficient number, since it is larger than the sum of its proper divisors (170083).

22263581 is a wasteful number, since it uses less digits than its factorization.

22263581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170082.

The product of its digits is 5760, while the sum is 29.

The square root of 22263581 is about 4718.4299295422. The cubic root of 22263581 is about 281.3185303949.

The spelling of 22263581 in words is "twenty-two million, two hundred sixty-three thousand, five hundred eighty-one".

Divisors: 1 131 169951 22263581