Base | Representation |
---|---|
bin | 101000110111… |
… | …0010010000010 |
3 | 1111022102011010 |
4 | 1101232102002 |
5 | 20441020414 |
6 | 2043101350 |
7 | 350044260 |
oct | 121562202 |
9 | 44272133 |
10 | 21423234 |
11 | 11102658 |
12 | 7211856 |
13 | 4591191 |
14 | 2bb9430 |
15 | 1d32959 |
hex | 146e482 |
21423234 has 16 divisors (see below), whose sum is σ = 48967488. Its totient is φ = 6120912.
The previous prime is 21423229. The next prime is 21423239. The reversal of 21423234 is 43232412.
It is an interprime number because it is at equal distance from previous prime (21423229) and next prime (21423239).
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a self number, because there is not a number n which added to its sum of digits gives 21423234.
It is not an unprimeable number, because it can be changed into a prime (21423239) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254997 + ... + 255080.
It is an arithmetic number, because the mean of its divisors is an integer number (3060468).
Almost surely, 221423234 is an apocalyptic number.
21423234 is an abundant number, since it is smaller than the sum of its proper divisors (27544254).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21423234 is a wasteful number, since it uses less digits than its factorization.
21423234 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 510089.
The product of its digits is 1152, while the sum is 21.
The square root of 21423234 is about 4628.5239547830. The cubic root of 21423234 is about 277.7335490233.
Adding to 21423234 its reverse (43232412), we get a palindrome (64655646).
The spelling of 21423234 in words is "twenty-one million, four hundred twenty-three thousand, two hundred thirty-four".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.001 sec. • engine limits •