1890798 has 32 divisors (see below), whose sum is σ = 4655616. Its totient is φ = 498528.

The previous prime is 1890793. The next prime is 1890799. The reversal of 1890798 is 8970981.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1186 + ... + 2277.

It is an arithmetic number, because the mean of its divisors is an integer number (145488).

2^1890798 is an apocalyptic number.

1890798 is an abundant number, since it is smaller than the sum of its proper divisors (2764818).

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

1890798 is a wasteful number, since it uses less digits than its factorization.

1890798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 1890798 is about 1375.0629076519. The cubic root of 1890798 is about 123.6559575282.

The spelling of 1890798 in words is "one million, eight hundred ninety thousand, seven hundred ninety-eight".