2631890 has 16 divisors (see below), whose sum is σ = 4943808. Its totient is φ = 1006896.

The previous prime is 2631887. The next prime is 2631917. The reversal of 2631890 is 981362.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5492 + ... + 5951.

It is an arithmetic number, because the mean of its divisors is an integer number (308988).

2^2631890 is an apocalyptic number.

2631890 is a deficient number, since it is larger than the sum of its proper divisors (2311918).

2631890 is a wasteful number, since it uses less digits than its factorization.

2631890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2631890 is about 1622.3100813346. The cubic root of 2631890 is about 138.0667953615.

The spelling of 2631890 in words is "two million, six hundred thirty-one thousand, eight hundred ninety".