1224624856 has 96 divisors (see below), whose sum is σ = 2938299840. Its totient is φ = 474066432.

The previous prime is 1224624839. The next prime is 1224624901. The reversal of 1224624856 is 6584264221.

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, 236956 + ... + 242068.

It is an arithmetic number, because the mean of its divisors is an integer number (30607290).

Almost surely, 2^1224624856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224624856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469149920).

1224624856 is an abundant number, since it is smaller than the sum of its proper divisors (1713674984).

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

1224624856 is a wasteful number, since it uses less digits than its factorization.

1224624856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193 (or 5182 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 1224624856 is about 34994.6403896368. The cubic root of 1224624856 is about 1069.8782450915.

The spelling of 1224624856 in words is "one billion, two hundred twenty-four million, six hundred twenty-four thousand, eight hundred fifty-six".