2102900 has 36 divisors (see below), whose sum is σ = 4835628. Its totient is φ = 791040.

The previous prime is 2102897. The next prime is 2102927. The reversal of 2102900 is 92012.

It can be written as a sum of positive squares in 6 ways, for example, as 40804 + 2062096 = 202^2 + 1436^2 .

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, 1082 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (134323).

2^2102900 is an apocalyptic number.

2102900 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 2102900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2417814).

2102900 is an abundant number, since it is smaller than the sum of its proper divisors (2732728).

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

2102900 is a wasteful number, since it uses less digits than its factorization.

2102900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2102900 is about 1450.1379244748. The cubic root of 2102900 is about 128.1168366800.

Adding to 2102900 its reverse (92012), we get a palindrome (2194912).

The spelling of 2102900 in words is "two million, one hundred two thousand, nine hundred".