2101386 has 16 divisors (see below), whose sum is σ = 4803264. Its totient is φ = 600384.

The previous prime is 2101357. The next prime is 2101391. The reversal of 2101386 is 6831012.

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

2101386 is a modest number, since divided by 1386 gives 210 as remainder.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 24975 + ... + 25058.

It is an arithmetic number, because the mean of its divisors is an integer number (300204).

2^2101386 is an apocalyptic number.

2101386 is an abundant number, since it is smaller than the sum of its proper divisors (2701878).

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

2101386 is a wasteful number, since it uses less digits than its factorization.

2101386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50045.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2101386 is about 1449.6158111720. The cubic root of 2101386 is about 128.0860830446.

Adding to 2101386 its reverse (6831012), we get a palindrome (8932398).

It can be divided in two parts, 210 and 1386, that added together give a triangular number (1596 = T₅₆).

The spelling of 2101386 in words is "two million, one hundred one thousand, three hundred eighty-six".