1224520 has 64 divisors (see below), whose sum is σ = 3162240. Its totient is φ = 425920.

The previous prime is 1224481. The next prime is 1224529. The reversal of 1224520 is 254221.

It is a junction number, because it is equal to n+sod(n) for n = 1224494 and 1224503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224529) 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, 53229 + ... + 53251.

It is an arithmetic number, because the mean of its divisors is an integer number (49410).

2^1224520 is an apocalyptic number.

1224520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1581120).

1224520 is an abundant number, since it is smaller than the sum of its proper divisors (1937720).

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

1224520 is a wasteful number, since it uses less digits than its factorization.

1224520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1224520 is about 1106.5803179164. The cubic root of 1224520 is about 106.9847708841.

Adding to 1224520 its reverse (254221), we get a palindrome (1478741).

Subtracting from 1224520 its reverse (254221), we obtain a cube (970299 = 99³).

The spelling of 1224520 in words is "one million, two hundred twenty-four thousand, five hundred twenty".