1224442872 has 128 divisors (see below), whose sum is σ = 3594240000. Its totient is φ = 385596288.

The previous prime is 1224442853. The next prime is 1224442903. The reversal of 1224442872 is 2782444221.

1224442872 is a `hidden beast` number, since 1 + 224 + 4 + 428 + 7 + 2 = 666.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292329 + ... + 296487.

It is an arithmetic number, because the mean of its divisors is an integer number (28080000).

Almost surely, 2^1224442872 is an apocalyptic number.

1224442872 is a gapful number since it is divisible by the number (12) 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 1224442872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797120000).

1224442872 is an abundant number, since it is smaller than the sum of its proper divisors (2369797128).

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

1224442872 is a wasteful number, since it uses less digits than its factorization.

1224442872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250 (or 4240 counting only the distinct ones).

The product of its digits is 57344, while the sum is 36.

The square root of 1224442872 is about 34992.0401234338. The cubic root of 1224442872 is about 1069.8252464482.

It can be divided in two parts, 122444 and 2872, that added together give a square (125316 = 354²).

The spelling of 1224442872 in words is "one billion, two hundred twenty-four million, four hundred forty-two thousand, eight hundred seventy-two".