2212638 has 8 divisors (see below), whose sum is σ = 4425288. Its totient is φ = 737544.

The previous prime is 2212633. The next prime is 2212657. The reversal of 2212638 is 8362122.

It is a sphenic number, since it is the product of 3 distinct primes.

2212638 is an admirable number.

It is a d-powerful number, because it can be written as 2 + 2¹³ + 1 + 2¹⁹ + 6⁸ + 3³ + 8³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184381 + ... + 184392.

It is an arithmetic number, because the mean of its divisors is an integer number (553161).

2^2212638 is an apocalyptic number.

2212638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2212638 is a wasteful number, since it uses less digits than its factorization.

2212638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368778.

The product of its digits is 1152, while the sum is 24.

The square root of 2212638 is about 1487.4938655336. The cubic root of 2212638 is about 130.3077128767.

It can be divided in two parts, 2212 and 638, that added together give a triangular number (2850 = T₇₅).

The spelling of 2212638 in words is "two million, two hundred twelve thousand, six hundred thirty-eight".