2100847 has 16 divisors (see below), whose sum is σ = 2534400. Its totient is φ = 1703520.

The previous prime is 2100841. The next prime is 2100859. The reversal of 2100847 is 7480012.

It is not a de Polignac number, because 2100847 - 2⁷ = 2100719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15972 + ... + 16102.

It is an arithmetic number, because the mean of its divisors is an integer number (158400).

2^2100847 is an apocalyptic number.

2100847 is the 917-th heptagonal number.

2100847 is a deficient number, since it is larger than the sum of its proper divisors (433553).

2100847 is a wasteful number, since it uses less digits than its factorization.

2100847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2100847 is about 1449.4298879215. The cubic root of 2100847 is about 128.0751308600.

Adding to 2100847 its reverse (7480012), we get a palindrome (9580859).

The spelling of 2100847 in words is "two million, one hundred thousand, eight hundred forty-seven".