2106490 has 16 divisors (see below), whose sum is σ = 3809448. Its totient is φ = 838656.

The previous prime is 2106479. The next prime is 2106491. The reversal of 2106490 is 946012.

It can be written as a sum of positive squares in 4 ways, for example, as 804609 + 1301881 = 897^2 + 1141^2 .

It is not an unprimeable number, because it can be changed into a prime (2106491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2794 + ... + 3466.

2^2106490 is an apocalyptic number.

2106490 is a deficient number, since it is larger than the sum of its proper divisors (1702958).

2106490 is a wasteful number, since it uses less digits than its factorization.

2106490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2106490 is about 1451.3752099302. The cubic root of 2106490 is about 128.1897008137.

The spelling of 2106490 in words is "two million, one hundred six thousand, four hundred ninety".