1224520404 has 48 divisors (see below), whose sum is σ = 3048446016. Its totient is φ = 381222400.

The previous prime is 1224520403. The next prime is 1224520441. The reversal of 1224520404 is 4040254221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224520403) 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, 3814 + ... + 49634.

It is an arithmetic number, because the mean of its divisors is an integer number (63509292).

Almost surely, 2^1224520404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224520404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524223008).

1224520404 is an abundant number, since it is smaller than the sum of its proper divisors (1823925612).

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

1224520404 is a wasteful number, since it uses less digits than its factorization.

1224520404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45976 (or 45974 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 1224520404 is about 34993.1479578503. The cubic root of 1224520404 is about 1069.8478264973.

Adding to 1224520404 its reverse (4040254221), we get a palindrome (5264774625).

The spelling of 1224520404 in words is "one billion, two hundred twenty-four million, five hundred twenty thousand, four hundred four".