Search a number
-
+
222430213 = 1271751419
BaseRepresentation
bin11010100001000…
…00010000000101
3120111112121220001
431100200100011
5423420231323
634023241301
75340424405
oct1520402005
9514477801
10222430213
11104613125
12625a9231
133710b915
1421780805
15147da3ad
hexd420405

222430213 has 4 divisors (see below), whose sum is σ = 224181760. Its totient is φ = 220678668.

The previous prime is 222430183. The next prime is 222430223. The reversal of 222430213 is 312034222.

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 222430213 - 217 = 222299141 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 (222430223) 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, 875583 + ... + 875836.

It is an arithmetic number, because the mean of its divisors is an integer number (56045440).

Almost surely, 2222430213 is an apocalyptic number.

It is an amenable number.

222430213 is a deficient number, since it is larger than the sum of its proper divisors (1751547).

222430213 is a wasteful number, since it uses less digits than its factorization.

222430213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751546.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 222430213 is about 14914.0944411654. The cubic root of 222430213 is about 605.8957775140.

Adding to 222430213 its reverse (312034222), we get a palindrome (534464435).

The spelling of 222430213 in words is "two hundred twenty-two million, four hundred thirty thousand, two hundred thirteen".

Divisors: 1 127 1751419 222430213