2128272 has 40 divisors (see below), whose sum is σ = 5565120. Its totient is φ = 700800.

The previous prime is 2128267. The next prime is 2128279. The reversal of 2128272 is 2728212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2128279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4629 + ... + 5067.

It is an arithmetic number, because the mean of its divisors is an integer number (139128).

2^2128272 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 2128272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2782560).

2128272 is an abundant number, since it is smaller than the sum of its proper divisors (3436848).

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

2128272 is a wasteful number, since it uses less digits than its factorization.

2128272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 545 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 2128272 is about 1458.8598287704. The cubic root of 2128272 is about 128.6300318382.

The spelling of 2128272 in words is "two million, one hundred twenty-eight thousand, two hundred seventy-two".