2161888 has 12 divisors (see below), whose sum is σ = 4256280. Its totient is φ = 1080928.

The previous prime is 2161883. The next prime is 2161897. The reversal of 2161888 is 8881612.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33748 + ... + 33811.

It is an arithmetic number, because the mean of its divisors is an integer number (354690).

2^2161888 is an apocalyptic number.

It is an amenable number.

2161888 is a deficient number, since it is larger than the sum of its proper divisors (2094392).

2161888 is an equidigital number, since it uses as much as digits as its factorization.

2161888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67569 (or 67561 counting only the distinct ones).

The product of its digits is 6144, while the sum is 34.

The square root of 2161888 is about 1470.3360160181. The cubic root of 2161888 is about 129.3037331440.

The spelling of 2161888 in words is "two million, one hundred sixty-one thousand, eight hundred eighty-eight".