2145888 has 36 divisors (see below), whose sum is σ = 6103188. Its totient is φ = 715200.

The previous prime is 2145853. The next prime is 2145937. The reversal of 2145888 is 8885412.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3438 + ... + 4013.

It is an arithmetic number, because the mean of its divisors is an integer number (169533).

2^2145888 is an apocalyptic number.

It is an amenable number.

2145888 is an abundant number, since it is smaller than the sum of its proper divisors (3957300).

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

2145888 is a wasteful number, since it uses less digits than its factorization.

2145888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7467 (or 7456 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 2145888 is about 1464.8849784198. The cubic root of 2145888 is about 128.9839532951.

The spelling of 2145888 in words is "two million, one hundred forty-five thousand, eight hundred eighty-eight".