1224227520 has 280 divisors, whose sum is σ = 4421270304. Its totient is φ = 321490944.

The previous prime is 1224227519. The next prime is 1224227527. The reversal of 1224227520 is 257224221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1224227527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1891837 + ... + 1892483.

Almost surely, 2^1224227520 is an apocalyptic number.

1224227520 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 1224227520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2210635152).

1224227520 is an abundant number, since it is smaller than the sum of its proper divisors (3197042784).

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

1224227520 is an equidigital number, since it uses as much as digits as its factorization.

1224227520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 1224227520 is about 34988.9628311558. The cubic root of 1224227520 is about 1069.7625233601.

The spelling of 1224227520 in words is "one billion, two hundred twenty-four million, two hundred twenty-seven thousand, five hundred twenty".