2056490 has 16 divisors (see below), whose sum is σ = 3919752. Its totient is φ = 774144.

The previous prime is 2056489. The next prime is 2056501. The reversal of 2056490 is 946502.

It can be written as a sum of positive squares in 4 ways, for example, as 1352569 + 703921 = 1163^2 + 839^2 .

It is a super-2 number, since 2×2056490² = 8458302240200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5879 + ... + 6218.

2^2056490 is an apocalyptic number.

2056490 is a deficient number, since it is larger than the sum of its proper divisors (1863262).

2056490 is a wasteful number, since it uses less digits than its factorization.

2056490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12121.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2056490 is about 1434.0467216935. The cubic root of 2056490 is about 127.1673244524.

The spelling of 2056490 in words is "two million, fifty-six thousand, four hundred ninety".