1228423 has 8 divisors (see below), whose sum is σ = 1417248. Its totient is φ = 1042944.

The previous prime is 1228399. The next prime is 1228429. The reversal of 1228423 is 3248221.

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

It is not a de Polignac number, because 1228423 - 2⁵ = 1228391 is a prime.

1228423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1228394 and 1228403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228429) 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, 15 + ... + 1567.

It is an arithmetic number, because the mean of its divisors is an integer number (177156).

2^1228423 is an apocalyptic number.

1228423 is a deficient number, since it is larger than the sum of its proper divisors (188825).

1228423 is a wasteful number, since it uses less digits than its factorization.

1228423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673.

The product of its digits is 768, while the sum is 22.

The square root of 1228423 is about 1108.3424561028. The cubic root of 1228423 is about 107.0983170636.

The spelling of 1228423 in words is "one million, two hundred twenty-eight thousand, four hundred twenty-three".