2206890 has 96 divisors (see below), whose sum is σ = 6829056. Its totient is φ = 483840.

The previous prime is 2206877. The next prime is 2206901. The reversal of 2206890 is 986022.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19474 + ... + 19586.

It is an arithmetic number, because the mean of its divisors is an integer number (71136).

2^2206890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2206890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3414528).

2206890 is an abundant number, since it is smaller than the sum of its proper divisors (4622166).

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

2206890 is a wasteful number, since it uses less digits than its factorization.

2206890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2206890 is about 1485.5605002826. The cubic root of 2206890 is about 130.1947770562.

The spelling of 2206890 in words is "two million, two hundred six thousand, eight hundred ninety".