1820088 has 48 divisors (see below), whose sum is σ = 5222880. Its totient is φ = 570624.

The previous prime is 1820087. The next prime is 1820089. The reversal of 1820088 is 8800281.

It is an interprime number because it is at equal distance from previous prime (1820087) and next prime (1820089).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481 + ... + 1967.

It is an arithmetic number, because the mean of its divisors is an integer number (108810).

2^1820088 is an apocalyptic number.

1820088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1820088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2611440).

1820088 is an abundant number, since it is smaller than the sum of its proper divisors (3402792).

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

1820088 is a wasteful number, since it uses less digits than its factorization.

1820088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 1820088 is about 1349.1063708989. The cubic root of 1820088 is about 122.0948827409.

The spelling of 1820088 in words is "one million, eight hundred twenty thousand, eighty-eight".