1224256404 has 48 divisors (see below), whose sum is σ = 3268891136. Its totient is φ = 349336800.

The previous prime is 1224256403. The next prime is 1224256409. The reversal of 1224256404 is 4046524221.

It is a super-2 number, since 2×1224256404² = 2997607485470022432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224256403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59139 + ... + 77109.

Almost surely, 2^1224256404 is an apocalyptic number.

1224256404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1224256404 is an abundant number, since it is smaller than the sum of its proper divisors (2044634732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1224256404 is a wasteful number, since it uses less digits than its factorization.

1224256404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18796 (or 18794 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 1224256404 is about 34989.3755874551. The cubic root of 1224256404 is about 1069.7709364961.

The spelling of 1224256404 in words is "one billion, two hundred twenty-four million, two hundred fifty-six thousand, four hundred four".