1272828 has 24 divisors (see below), whose sum is σ = 3012688. Its totient is φ = 418176.

The previous prime is 1272827. The next prime is 1272833. The reversal of 1272828 is 8282721.

It is a happy number.

It is a super-2 number, since 2×1272828² = 3240182235168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1272795 and 1272804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272827) 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, 150 + ... + 1602.

2^1272828 is an apocalyptic number.

It is an amenable number.

1272828 is an abundant number, since it is smaller than the sum of its proper divisors (1739860).

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

1272828 is a wasteful number, since it uses less digits than its factorization.

1272828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1531 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 1272828 is about 1128.1967913445. The cubic root of 1272828 is about 108.3735351124.

The spelling of 1272828 in words is "one million, two hundred seventy-two thousand, eight hundred twenty-eight".