2163912 has 16 divisors (see below), whose sum is σ = 5409840. Its totient is φ = 721296.

The previous prime is 2163911. The next prime is 2163919. The reversal of 2163912 is 2193612.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 90163 = 2163912 / (2 + 1 + 6 + 3 + 9 + 1 + 2).

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2163911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45058 + ... + 45105.

It is an arithmetic number, because the mean of its divisors is an integer number (338115).

2^2163912 is an apocalyptic number.

It is an amenable number.

2163912 is an abundant number, since it is smaller than the sum of its proper divisors (3245928).

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

2163912 is a wasteful number, since it uses less digits than its factorization.

2163912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90172 (or 90168 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 2163912 is about 1471.0241330447. The cubic root of 2163912 is about 129.3440727493.

The spelling of 2163912 in words is "two million, one hundred sixty-three thousand, nine hundred twelve".