2195100 has 90 divisors (see below), whose sum is σ = 7141904. Its totient is φ = 583200.

The previous prime is 2195071. The next prime is 2195113. The reversal of 2195100 is 15912.

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7965 + ... + 8235.

2^2195100 is an apocalyptic number.

2195100 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 2195100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3570952).

2195100 is an abundant number, since it is smaller than the sum of its proper divisors (4946804).

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

2195100 is a wasteful number, since it uses less digits than its factorization.

2195100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2195100 is about 1481.5869869839. The cubic root of 2195100 is about 129.9625138466.

The spelling of 2195100 in words is "two million, one hundred ninety-five thousand, one hundred".