1900836 has 72 divisors (see below), whose sum is σ = 5794880. Its totient is φ = 513216.

The previous prime is 1900831. The next prime is 1900861. The reversal of 1900836 is 6380091.

It is a super-2 number, since 2×1900836² = 7226354997792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1900831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4590 + ... + 4986.

2^1900836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1900836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2897440).

1900836 is an abundant number, since it is smaller than the sum of its proper divisors (3894044).

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

1900836 is a wasteful number, since it uses less digits than its factorization.

1900836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1900836 is about 1378.7080909315. The cubic root of 1900836 is about 123.8743958802.

It can be divided in two parts, 19008 and 36, that added together give a square (19044 = 138²).

The spelling of 1900836 in words is "one million, nine hundred thousand, eight hundred thirty-six".