1223649882 has 128 divisors (see below), whose sum is σ = 3425157120. Its totient is φ = 315161280.

The previous prime is 1223649811. The next prime is 1223649901. The reversal of 1223649882 is 2889463221.

1223649882 is a `hidden beast` number, since 122 + 36 + 498 + 8 + 2 = 666.

It is a super-2 number, since 2×1223649882² = 2994638067437227848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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 63 ways as a sum of consecutive naturals, for example, 208407 + ... + 214197.

It is an arithmetic number, because the mean of its divisors is an integer number (26759040).

Almost surely, 2^1223649882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223649882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1712578560).

1223649882 is an abundant number, since it is smaller than the sum of its proper divisors (2201507238).

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

1223649882 is a wasteful number, since it uses less digits than its factorization.

1223649882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5865 (or 5859 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 1223649882 is about 34980.7072827294. The cubic root of 1223649882 is about 1069.5942450816.

The spelling of 1223649882 in words is "one billion, two hundred twenty-three million, six hundred forty-nine thousand, eight hundred eighty-two".