2158768 has 10 divisors (see below), whose sum is σ = 4182644. Its totient is φ = 1079376.

The previous prime is 2158763. The next prime is 2158769. The reversal of 2158768 is 8678512.

It is not an unprimeable number, because it can be changed into a prime (2158763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67446 + ... + 67477.

2^2158768 is an apocalyptic number.

It is an amenable number.

2158768 is a deficient number, since it is larger than the sum of its proper divisors (2023876).

2158768 is a wasteful number, since it uses less digits than its factorization.

2158768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134931 (or 134925 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 2158768 is about 1469.2746509758. The cubic root of 2158768 is about 129.2415002136.

It can be divided in two parts, 2158 and 768, that added together give a triangular number (2926 = T₇₆).

The spelling of 2158768 in words is "two million, one hundred fifty-eight thousand, seven hundred sixty-eight".