1224560 has 20 divisors (see below), whose sum is σ = 2847288. Its totient is φ = 489792.

The previous prime is 1224533. The next prime is 1224577. The reversal of 1224560 is 654221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7574 + ... + 7733.

2^1224560 is an apocalyptic number.

1224560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224560 is an abundant number, since it is smaller than the sum of its proper divisors (1622728).

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

1224560 is a wasteful number, since it uses less digits than its factorization.

1224560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15320 (or 15314 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1224560 is about 1106.5983914682. The cubic root of 1224560 is about 106.9859357879.

Adding to 1224560 its reverse (654221), we get a palindrome (1878781).

The spelling of 1224560 in words is "one million, two hundred twenty-four thousand, five hundred sixty".