2105147256 has 64 divisors (see below), whose sum is σ = 5718604800. Its totient is φ = 643334400.

The previous prime is 2105147251. The next prime is 2105147257. The reversal of 2105147256 is 6527415012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105147251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60325 + ... + 88596.

It is an arithmetic number, because the mean of its divisors is an integer number (89353200).

Almost surely, 2^2105147256 is an apocalyptic number.

It is an amenable number.

2105147256 is an abundant number, since it is smaller than the sum of its proper divisors (3613457544).

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

2105147256 is a wasteful number, since it uses less digits than its factorization.

2105147256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148980 (or 148976 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 2105147256 is about 45881.8837451123. The cubic root of 2105147256 is about 1281.6245762127.

The spelling of 2105147256 in words is "two billion, one hundred five million, one hundred forty-seven thousand, two hundred fifty-six".