1890196 has 72 divisors (see below), whose sum is σ = 4608576. Its totient is φ = 656640.

The previous prime is 1890193. The next prime is 1890211. The reversal of 1890196 is 6910981.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99475 + ... + 99493.

It is an arithmetic number, because the mean of its divisors is an integer number (64008).

2^1890196 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 1890196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2304288).

1890196 is an abundant number, since it is smaller than the sum of its proper divisors (2718380).

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

1890196 is a wasteful number, since it uses less digits than its factorization.

1890196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1890196 is about 1374.8439911495. The cubic root of 1890196 is about 123.6428327720.

The spelling of 1890196 in words is "one million, eight hundred ninety thousand, one hundred ninety-six".