1906812 has 18 divisors (see below), whose sum is σ = 4820088. Its totient is φ = 635592.

The previous prime is 1906811. The next prime is 1906829. The reversal of 1906812 is 2186091.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906811) 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, 26448 + ... + 26519.

2^1906812 is an apocalyptic number.

1906812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1906812 is an abundant number, since it is smaller than the sum of its proper divisors (2913276).

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

1906812 is a wasteful number, since it uses less digits than its factorization.

1906812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52977 (or 52972 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1906812 is about 1380.8736365070. The cubic root of 1906812 is about 124.0040754817.

The spelling of 1906812 in words is "one million, nine hundred six thousand, eight hundred twelve".