2471890 has 16 divisors (see below), whose sum is σ = 4558680. Its totient is φ = 964480.

The previous prime is 2471869. The next prime is 2471899. The reversal of 2471890 is 981742.

It can be written as a sum of positive squares in 4 ways, for example, as 1940449 + 531441 = 1393^2 + 729^2 .

It is a super-2 number, since 2×2471890² = 12220480344200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2471899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2605 + ... + 3424.

2^2471890 is an apocalyptic number.

2471890 is a deficient number, since it is larger than the sum of its proper divisors (2086790).

2471890 is a wasteful number, since it uses less digits than its factorization.

2471890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6077.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2471890 is about 1572.2245386712. The cubic root of 2471890 is about 135.2102804292.

The spelling of 2471890 in words is "two million, four hundred seventy-one thousand, eight hundred ninety".