2105708544 has 117 divisors (see below), whose sum is σ = 6107971363. Its totient is φ = 698966016.

The previous prime is 2105708513. The next prime is 2105708639. The reversal of 2105708544 is 4458075012.

The square root of 2105708544 is 45888.

It is a perfect power (a square), and thus also a powerful number.

2105708544 is a `hidden beast` number, since 2 + 1 + 0 + 570 + 85 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2105708499 and 2105708508.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8810377 + ... + 8810615.

Almost surely, 2^2105708544 is an apocalyptic number.

2105708544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

2105708544 is the 45888-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2105708544

2105708544 is an abundant number, since it is smaller than the sum of its proper divisors (4002262819).

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

2105708544 is an frugal number, since it uses more digits than its factorization.

2105708544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The cubic root of 2105708544 is about 1281.7384711067.

Multiplying 2105708544 by its sum of digits (36), we get a square (75805507584 = 275328²).

2105708544 divided by its sum of digits (36) gives a square (58491904 = 7648²).

It can be divided in two parts, 2105 and 708544, that added together give a square (710649 = 843²).

The spelling of 2105708544 in words is "two billion, one hundred five million, seven hundred eight thousand, five hundred forty-four".