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1222430 = 251111113
BaseRepresentation
bin100101010011100011110
32022002212012
410222130132
5303104210
642111222
713250636
oct4523436
92262765
101222430
11765480
124ab512
1333a541
1423b6c6
15192305
hex12a71e

1222430 has 16 divisors (see below), whose sum is σ = 2400624. Its totient is φ = 444480.

The previous prime is 1222411. The next prime is 1222433. The reversal of 1222430 is 342221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5447 + ... + 5666.

It is an arithmetic number, because the mean of its divisors is an integer number (150039).

21222430 is an apocalyptic number.

1222430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222430 is a deficient number, since it is larger than the sum of its proper divisors (1178194).

1222430 is a wasteful number, since it uses less digits than its factorization.

1222430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11131.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1222430 is about 1105.6355638274. The cubic root of 1222430 is about 106.9238693325.

Adding to 1222430 its reverse (342221), we get a palindrome (1564651).

It can be divided in two parts, 122 and 2430, that added together give a palindrome (2552).

The spelling of 1222430 in words is "one million, two hundred twenty-two thousand, four hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 11113 22226 55565 111130 122243 244486 611215 1222430