1888340 has 24 divisors (see below), whose sum is σ = 3991680. Its totient is φ = 750368.

The previous prime is 1888331. The next prime is 1888349. The reversal of 1888340 is 438881.

It is an interprime number because it is at equal distance from previous prime (1888331) and next prime (1888349).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1888297 and 1888306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1888349) 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, 5081 + ... + 5439.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^1888340 is an apocalyptic number.

1888340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1888340 is an abundant number, since it is smaller than the sum of its proper divisors (2103340).

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

1888340 is a wasteful number, since it uses less digits than its factorization.

1888340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1888340 is about 1374.1688396991. The cubic root of 1888340 is about 123.6023508593.

The spelling of 1888340 in words is "one million, eight hundred eighty-eight thousand, three hundred forty".