1888140 has 24 divisors (see below), whose sum is σ = 5286960. Its totient is φ = 503488.

The previous prime is 1888129. The next prime is 1888151. The reversal of 1888140 is 418881.

It is an interprime number because it is at equal distance from previous prime (1888129) and next prime (1888151).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1888098 and 1888107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15675 + ... + 15794.

It is an arithmetic number, because the mean of its divisors is an integer number (220290).

2^1888140 is an apocalyptic number.

1888140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1888140 is an abundant number, since it is smaller than the sum of its proper divisors (3398820).

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

1888140 is a wasteful number, since it uses less digits than its factorization.

1888140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31481 (or 31479 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 1888140 is about 1374.0960665106. The cubic root of 1888140 is about 123.5979870013.

The spelling of 1888140 in words is "one million, eight hundred eighty-eight thousand, one hundred forty".