2212578 has 12 divisors (see below), whose sum is σ = 4793958. Its totient is φ = 737520.

The previous prime is 2212571. The next prime is 2212579. The reversal of 2212578 is 8752122.

It can be written as a sum of positive squares in only one way, i.e., 2169729 + 42849 = 1473^2 + 207^2 .

It is not an unprimeable number, because it can be changed into a prime (2212571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61443 + ... + 61478.

2^2212578 is an apocalyptic number.

2212578 is an abundant number, since it is smaller than the sum of its proper divisors (2581380).

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

2212578 is a wasteful number, since it uses less digits than its factorization.

2212578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122929 (or 122926 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2212578 is about 1487.4736972464. The cubic root of 2212578 is about 130.3065350167.

The spelling of 2212578 in words is "two million, two hundred twelve thousand, five hundred seventy-eight".