1222854648 has 64 divisors (see below), whose sum is σ = 3138600960. Its totient is φ = 396848256.

The previous prime is 1222854623. The next prime is 1222854671. The reversal of 1222854648 is 8464582221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219465 + ... + 224967.

It is an arithmetic number, because the mean of its divisors is an integer number (49040640).

Almost surely, 2^1222854648 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 1222854648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569300480).

1222854648 is an abundant number, since it is smaller than the sum of its proper divisors (1915746312).

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

1222854648 is a wasteful number, since it uses less digits than its factorization.

1222854648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756 (or 5752 counting only the distinct ones).

The product of its digits is 245760, while the sum is 42.

The square root of 1222854648 is about 34969.3386840529. The cubic root of 1222854648 is about 1069.3624897817.

The spelling of 1222854648 in words is "one billion, two hundred twenty-two million, eight hundred fifty-four thousand, six hundred forty-eight".