1224555480 has 96 divisors (see below), whose sum is σ = 4045120560. Its totient is φ = 321189120.

The previous prime is 1224555469. The next prime is 1224555511. The reversal of 1224555480 is 845554221.

1224555480 is a `hidden beast` number, since 1 + 2 + 24 + 5 + 554 + 80 = 666.

It is a super-2 number, since 2×1224555480² = 2999072247196060800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5922 + ... + 49841.

Almost surely, 2^1224555480 is an apocalyptic number.

1224555480 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 1224555480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2022560280).

1224555480 is an abundant number, since it is smaller than the sum of its proper divisors (2820565080).

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

1224555480 is a wasteful number, since it uses less digits than its factorization.

1224555480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55841 (or 55834 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The square root of 1224555480 is about 34993.6491380936. The cubic root of 1224555480 is about 1069.8580415507.

The spelling of 1224555480 in words is "one billion, two hundred twenty-four million, five hundred fifty-five thousand, four hundred eighty".