2101896 has 64 divisors (see below), whose sum is σ = 6019200. Its totient is φ = 679104.

The previous prime is 2101873. The next prime is 2101903. The reversal of 2101896 is 6981012.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7861 + ... + 8123.

It is an arithmetic number, because the mean of its divisors is an integer number (94050).

2^2101896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3009600).

2101896 is an abundant number, since it is smaller than the sum of its proper divisors (3917304).

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

2101896 is a wasteful number, since it uses less digits than its factorization.

2101896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2101896 is about 1449.7917091776. The cubic root of 2101896 is about 128.0964442409.

The spelling of 2101896 in words is "two million, one hundred one thousand, eight hundred ninety-six".