1228829 has 8 divisors (see below), whose sum is σ = 1411200. Its totient is φ = 1048176.

The previous prime is 1228789. The next prime is 1228837. The reversal of 1228829 is 9288221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228829 is a prime.

It is a super-2 number, since 2×1228829² = 3020041422482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1228795 and 1228804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228849) 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, 2192 + ... + 2694.

It is an arithmetic number, because the mean of its divisors is an integer number (176400).

2^1228829 is an apocalyptic number.

It is an amenable number.

1228829 is a deficient number, since it is larger than the sum of its proper divisors (182371).

1228829 is an equidigital number, since it uses as much as digits as its factorization.

1228829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859.

The product of its digits is 4608, while the sum is 32.

The square root of 1228829 is about 1108.5255973589. The cubic root of 1228829 is about 107.1101146088.

Subtracting from 1228829 its product of digits (4608), we obtain a palindrome (1224221).

The spelling of 1228829 in words is "one million, two hundred twenty-eight thousand, eight hundred twenty-nine".