2290406 has 4 divisors (see below), whose sum is σ = 3435612. Its totient is φ = 1145202.

The previous prime is 2290403. The next prime is 2290423. The reversal of 2290406 is 6040922.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2290403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572600 + ... + 572603.

It is an arithmetic number, because the mean of its divisors is an integer number (858903).

2^2290406 is an apocalyptic number.

2290406 is a deficient number, since it is larger than the sum of its proper divisors (1145206).

2290406 is a wasteful number, since it uses less digits than its factorization.

2290406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145205.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2290406 is about 1513.4087352728. The cubic root of 2290406 is about 131.8168181461.

The spelling of 2290406 in words is "two million, two hundred ninety thousand, four hundred six".