2105523200 has 132 divisors (see below), whose sum is σ = 5694377352. Its totient is φ = 765542400.

The previous prime is 2105523191. The next prime is 2105523227. The reversal of 2105523200 is 23255012.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277862 + ... + 285338.

Almost surely, 2^2105523200 is an apocalyptic number.

2105523200 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 2105523200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2847188676).

2105523200 is an abundant number, since it is smaller than the sum of its proper divisors (3588854152).

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

2105523200 is a wasteful number, since it uses less digits than its factorization.

2105523200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7518 (or 7495 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2105523200 is about 45885.9804297565. The cubic root of 2105523200 is about 1281.7008638911.

Adding to 2105523200 its reverse (23255012), we get a palindrome (2128778212).

The spelling of 2105523200 in words is "two billion, one hundred five million, five hundred twenty-three thousand, two hundred".