2100560700 has 144 divisors (see below), whose sum is σ = 6983553024. Its totient is φ = 477523200.

The previous prime is 2100560699. The next prime is 2100560701. The reversal of 2100560700 is 70650012.

It is an interprime number because it is at equal distance from previous prime (2100560699) and next prime (2100560701).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100560701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 398482 + ... + 403718.

It is an arithmetic number, because the mean of its divisors is an integer number (48496896).

Almost surely, 2^2100560700 is an apocalyptic number.

2100560700 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 2100560700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3491776512).

2100560700 is an abundant number, since it is smaller than the sum of its proper divisors (4882992324).

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

2100560700 is a wasteful number, since it uses less digits than its factorization.

2100560700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5452 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 2100560700 is about 45831.8742798066. The cubic root of 2100560700 is about 1280.6931263912.

The spelling of 2100560700 in words is "two billion, one hundred million, five hundred sixty thousand, seven hundred".