2541690 has 48 divisors (see below), whose sum is σ = 6829056. Its totient is φ = 655200.

The previous prime is 2541689. The next prime is 2541697. The reversal of 2541690 is 961452.

2541690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2541690² = 12920376112200, 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 (2541697) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2335 + ... + 3245.

It is an arithmetic number, because the mean of its divisors is an integer number (142272).

2^2541690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2541690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3414528).

2541690 is an abundant number, since it is smaller than the sum of its proper divisors (4287366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2541690 is a wasteful number, since it uses less digits than its factorization.

2541690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2541690 is about 1594.2678570428. The cubic root of 2541690 is about 136.4711527818.

The spelling of 2541690 in words is "two million, five hundred forty-one thousand, six hundred ninety".