2158268 has 12 divisors (see below), whose sum is σ = 4316592. Its totient is φ = 924960.

The previous prime is 2158259. The next prime is 2158291. The reversal of 2158268 is 8628512.

2158268 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38513 + ... + 38568.

It is an arithmetic number, because the mean of its divisors is an integer number (359716).

2^2158268 is an apocalyptic number.

2158268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2158268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2158268 is a wasteful number, since it uses less digits than its factorization.

2158268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77092 (or 77090 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 2158268 is about 1469.1044891362. The cubic root of 2158268 is about 129.2315214140.

The spelling of 2158268 in words is "two million, one hundred fifty-eight thousand, two hundred sixty-eight".