Base | Representation |
---|---|
bin | 101010011001… |
… | …1100111000101 |
3 | 1112211110212122 |
4 | 1110303213011 |
5 | 21142401433 |
6 | 2112255325 |
7 | 356651564 |
oct | 124634705 |
9 | 45743778 |
10 | 22231493 |
11 | 11604939 |
12 | 7541545 |
13 | 47b503b |
14 | 2d49bdb |
15 | 1e42198 |
hex | 15339c5 |
22231493 has 4 divisors (see below), whose sum is σ = 22536108. Its totient is φ = 21926880.
The previous prime is 22231481. The next prime is 22231499. The reversal of 22231493 is 39413222.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 6723649 + 15507844 = 2593^2 + 3938^2 .
It is a cyclic number.
It is not a de Polignac number, because 22231493 - 222 = 18037189 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22231499) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152198 + ... + 152343.
It is an arithmetic number, because the mean of its divisors is an integer number (5634027).
Almost surely, 222231493 is an apocalyptic number.
It is an amenable number.
22231493 is a deficient number, since it is larger than the sum of its proper divisors (304615).
22231493 is an equidigital number, since it uses as much as digits as its factorization.
22231493 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 304614.
The product of its digits is 2592, while the sum is 26.
The square root of 22231493 is about 4715.0284198507. The cubic root of 22231493 is about 281.1833127158.
The spelling of 22231493 in words is "twenty-two million, two hundred thirty-one thousand, four hundred ninety-three".
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