2158272 has 56 divisors (see below), whose sum is σ = 6350000. Its totient is φ = 718848.

The previous prime is 2158259. The next prime is 2158291. The reversal of 2158272 is 2728512.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104 + ... + 2352.

2^2158272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3175000).

2158272 is an abundant number, since it is smaller than the sum of its proper divisors (4191728).

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

2158272 is a wasteful number, since it uses less digits than its factorization.

2158272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270 (or 1254 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2158272 is about 1469.1058505091. The cubic root of 2158272 is about 129.2316012505.

The spelling of 2158272 in words is "two million, one hundred fifty-eight thousand, two hundred seventy-two".