2212770 has 64 divisors (see below), whose sum is σ = 6241536. Its totient is φ = 491520.

The previous prime is 2212753. The next prime is 2212781. The reversal of 2212770 is 772122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8482 + ... + 8738.

It is an arithmetic number, because the mean of its divisors is an integer number (97524).

2^2212770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3120768).

2212770 is an abundant number, since it is smaller than the sum of its proper divisors (4028766).

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

2212770 is a wasteful number, since it uses less digits than its factorization.

2212770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 2212770 is about 1487.5382348027. The cubic root of 2212770 is about 130.3103040938.

Adding to 2212770 its reverse (772122), we get a palindrome (2984892).

The spelling of 2212770 in words is "two million, two hundred twelve thousand, seven hundred seventy".