2490890 has 8 divisors (see below), whose sum is σ = 4483620. Its totient is φ = 996352.

The previous prime is 2490889. The next prime is 2490899. The reversal of 2490890 is 980942.

It can be written as a sum of positive squares in 2 ways, for example, as 2157961 + 332929 = 1469^2 + 577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2490899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124535 + ... + 124554.

2^2490890 is an apocalyptic number.

2490890 is a deficient number, since it is larger than the sum of its proper divisors (1992730).

2490890 is a wasteful number, since it uses less digits than its factorization.

2490890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249096.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2490890 is about 1578.2553659025. The cubic root of 2490890 is about 135.5558245488. Note that the first 3 decimals are identical.

The spelling of 2490890 in words is "two million, four hundred ninety thousand, eight hundred ninety".