2212290 has 48 divisors (see below), whose sum is σ = 5885568. Its totient is φ = 576288.

The previous prime is 2212277. The next prime is 2212297. The reversal of 2212290 is 922122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2212297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3969 + ... + 4491.

It is an arithmetic number, because the mean of its divisors is an integer number (122616).

2^2212290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2942784).

2212290 is an abundant number, since it is smaller than the sum of its proper divisors (3673278).

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

2212290 is a wasteful number, since it uses less digits than its factorization.

2212290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2212290 is about 1487.3768856615. The cubic root of 2212290 is about 130.3008809922.

The spelling of 2212290 in words is "two million, two hundred twelve thousand, two hundred ninety".