2152090 has 32 divisors (see below), whose sum is σ = 4127760. Its totient is φ = 806400.

The previous prime is 2152079. The next prime is 2152093. The reversal of 2152090 is 902512.

It is a Cunningham number, because it is equal to 1467²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 23409 + 2128681 = 153^2 + 1459^2 .

It is not an unprimeable number, because it can be changed into a prime (2152093) 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, 11800 + ... + 11980.

2^2152090 is an apocalyptic number.

2152090 is a deficient number, since it is larger than the sum of its proper divisors (1975670).

2152090 is a wasteful number, since it uses less digits than its factorization.

2152090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2152090 is about 1467.0003408316. Note that the first 3 decimals coincide. The cubic root of 2152090 is about 129.1080960027.

The spelling of 2152090 in words is "two million, one hundred fifty-two thousand, ninety".