2193686256 has 80 divisors (see below), whose sum is σ = 6010329600. Its totient is φ = 687074304.

The previous prime is 2193686233. The next prime is 2193686269. The reversal of 2193686256 is 6526863912.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 584835 + ... + 588573.

It is an arithmetic number, because the mean of its divisors is an integer number (75129120).

Almost surely, 2^2193686256 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 2193686256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3005164800).

2193686256 is an abundant number, since it is smaller than the sum of its proper divisors (3816643344).

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

2193686256 is a wasteful number, since it uses less digits than its factorization.

2193686256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486 (or 4480 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 2193686256 is about 46836.8045024423. The cubic root of 2193686256 is about 1299.3460726939.

The spelling of 2193686256 in words is "two billion, one hundred ninety-three million, six hundred eighty-six thousand, two hundred fifty-six".