2541890 has 16 divisors (see below), whose sum is σ = 4927608. Its totient is φ = 938496.

The previous prime is 2541883. The next prime is 2541899. The reversal of 2541890 is 981452.

It can be written as a sum of positive squares in 4 ways, for example, as 2024929 + 516961 = 1423^2 + 719^2 .

It is a super-2 number, since 2×2541890² = 12922409544200, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2541899) 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, 9647 + ... + 9906.

2^2541890 is an apocalyptic number.

2541890 is a deficient number, since it is larger than the sum of its proper divisors (2385718).

2541890 is a wasteful number, since it uses less digits than its factorization.

2541890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19573.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2541890 is about 1594.3305805259. The cubic root of 2541890 is about 136.4747322262.

The spelling of 2541890 in words is "two million, five hundred forty-one thousand, eight hundred ninety".