2106740 has 12 divisors (see below), whose sum is σ = 4424196. Its totient is φ = 842688.

The previous prime is 2106737. The next prime is 2106749. The reversal of 2106740 is 476012.

It can be written as a sum of positive squares in 2 ways, for example, as 1582564 + 524176 = 1258^2 + 724^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 105337 = 2106740 / (2 + 1 + 0 + 6 + 7 + 4 + 0).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52649 + ... + 52688.

It is an arithmetic number, because the mean of its divisors is an integer number (368683).

2^2106740 is an apocalyptic number.

2106740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2106740 is an abundant number, since it is smaller than the sum of its proper divisors (2317456).

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

2106740 is a wasteful number, since it uses less digits than its factorization.

2106740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105346 (or 105344 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 2106740 is about 1451.4613325886. The cubic root of 2106740 is about 128.1947718335.

The spelling of 2106740 in words is "two million, one hundred six thousand, seven hundred forty".