1269128 has 32 divisors (see below), whose sum is σ = 2756160. Its totient is φ = 536640.

The previous prime is 1269119. The next prime is 1269131. The reversal of 1269128 is 8219621.

It is a super-2 number, since 2×1269128² = 3221371760768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1269128.

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, 7250 + ... + 7422.

It is an arithmetic number, because the mean of its divisors is an integer number (86130).

2^1269128 is an apocalyptic number.

It is an amenable number.

1269128 is an abundant number, since it is smaller than the sum of its proper divisors (1487032).

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

1269128 is a wasteful number, since it uses less digits than its factorization.

1269128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 313 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 1269128 is about 1126.5558130870. Note that the first 3 decimals coincide. The cubic root of 1269128 is about 108.2684223900.

The spelling of 1269128 in words is "one million, two hundred sixty-nine thousand, one hundred twenty-eight".