1269828 has 36 divisors (see below), whose sum is σ = 3669120. Its totient is φ = 362736.

The previous prime is 1269797. The next prime is 1269847. The reversal of 1269828 is 8289621.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1269828² = 3224926299168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1269792 and 1269801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2268 + ... + 2771.

It is an arithmetic number, because the mean of its divisors is an integer number (101920).

2^1269828 is an apocalyptic number.

1269828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1269828 is an abundant number, since it is smaller than the sum of its proper divisors (2399292).

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

1269828 is a wasteful number, since it uses less digits than its factorization.

1269828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056 (or 5051 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1269828 is about 1126.8664517147. The cubic root of 1269828 is about 108.2883242350.

The spelling of 1269828 in words is "one million, two hundred sixty-nine thousand, eight hundred twenty-eight".