2091256700 has 216 divisors, whose sum is σ = 5403872880. Its totient is φ = 698880000.

The previous prime is 2091256693. The next prime is 2091256703. The reversal of 2091256700 is 76521902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091256703) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 8331575 + ... + 8331825.

It is an arithmetic number, because the mean of its divisors is an integer number (25017930).

Almost surely, 2^2091256700 is an apocalyptic number.

2091256700 is a gapful number since it is divisible by the number (20) 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 2091256700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2701936440).

2091256700 is an abundant number, since it is smaller than the sum of its proper divisors (3312616180).

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

2091256700 is a wasteful number, since it uses less digits than its factorization.

2091256700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 2091256700 is about 45730.2602223079. The cubic root of 2091256700 is about 1278.7994725073.

The spelling of 2091256700 in words is "two billion, ninety-one million, two hundred fifty-six thousand, seven hundred".