1888240 has 20 divisors (see below), whose sum is σ = 4390344. Its totient is φ = 755264.

The previous prime is 1888223. The next prime is 1888247. The reversal of 1888240 is 428881.

It is a tau number, because it is divible by the number of its divisors (20).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1888247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11722 + ... + 11881.

2^1888240 is an apocalyptic number.

1888240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1888240 is an abundant number, since it is smaller than the sum of its proper divisors (2502104).

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

1888240 is a wasteful number, since it uses less digits than its factorization.

1888240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23616 (or 23610 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 1888240 is about 1374.1324535866. The cubic root of 1888240 is about 123.6001689688.

The spelling of 1888240 in words is "one million, eight hundred eighty-eight thousand, two hundred forty".