2405090 has 8 divisors (see below), whose sum is σ = 4329180. Its totient is φ = 962032.

The previous prime is 2405089. The next prime is 2405093. The reversal of 2405090 is 905042.

It can be written as a sum of positive squares in 2 ways, for example, as 2393209 + 11881 = 1547^2 + 109^2 .

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 (2405093) 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, 120245 + ... + 120264.

2^2405090 is an apocalyptic number.

2405090 is a deficient number, since it is larger than the sum of its proper divisors (1924090).

2405090 is a wasteful number, since it uses less digits than its factorization.

2405090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240516.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2405090 is about 1550.8352588202. The cubic root of 2405090 is about 133.9811735636.

The spelling of 2405090 in words is "two million, four hundred five thousand, ninety".