1912212 has 18 divisors (see below), whose sum is σ = 4833738. Its totient is φ = 637392.

The previous prime is 1912193. The next prime is 1912213. The reversal of 1912212 is 2122191.

It can be written as a sum of positive squares in only one way, i.e., 1887876 + 24336 = 1374^2 + 156^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26523 + ... + 26594.

It is an arithmetic number, because the mean of its divisors is an integer number (268541).

2^1912212 is an apocalyptic number.

1912212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1912212 is an abundant number, since it is smaller than the sum of its proper divisors (2921526).

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

1912212 is a wasteful number, since it uses less digits than its factorization.

1912212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53127 (or 53122 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1912212 is about 1382.8275380538. The cubic root of 1912212 is about 124.1210230165.

The spelling of 1912212 in words is "one million, nine hundred twelve thousand, two hundred twelve".