1428272 has 40 divisors (see below), whose sum is σ = 3013200. Its totient is φ = 653312.

The previous prime is 1428257. The next prime is 1428281. The reversal of 1428272 is 2728241.

It is a congruent number.

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, 16004 + ... + 16092.

It is an arithmetic number, because the mean of its divisors is an integer number (75330).

2^1428272 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 1428272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506600).

1428272 is an abundant number, since it is smaller than the sum of its proper divisors (1584928).

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

1428272 is a wasteful number, since it uses less digits than its factorization.

1428272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 167 counting only the distinct ones).

The product of its digits is 1792, while the sum is 26.

The square root of 1428272 is about 1195.1033428118. The cubic root of 1428272 is about 112.6169187760.

The spelling of 1428272 in words is "one million, four hundred twenty-eight thousand, two hundred seventy-two".