2158212 has 24 divisors (see below), whose sum is σ = 5755456. Its totient is φ = 616608.

The previous prime is 2158183. The next prime is 2158223. The reversal of 2158212 is 2128512.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12763 + ... + 12930.

2^2158212 is an apocalyptic number.

It is an amenable number.

2158212 is an abundant number, since it is smaller than the sum of its proper divisors (3597244).

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

2158212 is a wasteful number, since it uses less digits than its factorization.

2158212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25707 (or 25705 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 2158212 is about 1469.0854297828. The cubic root of 2158212 is about 129.2304036925.

The spelling of 2158212 in words is "two million, one hundred fifty-eight thousand, two hundred twelve".