2205954 has 56 divisors (see below), whose sum is σ = 5311980. Its totient is φ = 684288.

The previous prime is 2205949. The next prime is 2205989. The reversal of 2205954 is 4595022.

It can be written as a sum of positive squares in 2 ways, for example, as 2205225 + 729 = 1485^2 + 27^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 24742 + ... + 24830.

2^2205954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2205954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2655990).

2205954 is an abundant number, since it is smaller than the sum of its proper divisors (3106026).

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

2205954 is an equidigital number, since it uses as much as digits as its factorization.

2205954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2205954 is about 1485.2454342633. The cubic root of 2205954 is about 130.1763681122.

The spelling of 2205954 in words is "two million, two hundred five thousand, nine hundred fifty-four".