2245890 has 32 divisors (see below), whose sum is σ = 5518656. Its totient is φ = 584640.

The previous prime is 2245889. The next prime is 2245931. The reversal of 2245890 is 985422.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420 + ... + 2160.

It is an arithmetic number, because the mean of its divisors is an integer number (172458).

2^2245890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2245890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2759328).

2245890 is an abundant number, since it is smaller than the sum of its proper divisors (3272766).

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

2245890 is a wasteful number, since it uses less digits than its factorization.

2245890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2245890 is about 1498.6293737946. The cubic root of 2245890 is about 130.9572340639.

The spelling of 2245890 in words is "two million, two hundred forty-five thousand, eight hundred ninety".