1906244 has 24 divisors (see below), whose sum is σ = 3580920. Its totient is φ = 887808.

The previous prime is 1906243. The next prime is 1906259. The reversal of 1906244 is 4426091.

It can be written as a sum of positive squares in 4 ways, for example, as 313600 + 1592644 = 560^2 + 1262^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19604 + ... + 19700.

It is an arithmetic number, because the mean of its divisors is an integer number (149205).

2^1906244 is an apocalyptic number.

It is an amenable number.

1906244 is a deficient number, since it is larger than the sum of its proper divisors (1674676).

1906244 is an equidigital number, since it uses as much as digits as its factorization.

1906244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1906244 is about 1380.6679542888. The cubic root of 1906244 is about 123.9917615061.

The spelling of 1906244 in words is "one million, nine hundred six thousand, two hundred forty-four".