1069728 has 48 divisors (see below), whose sum is σ = 3066336. Its totient is φ = 323840.

The previous prime is 1069727. The next prime is 1069741. The reversal of 1069728 is 8279601.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1069728² = 2288635987968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1069727) 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, 550 + ... + 1562.

It is an arithmetic number, because the mean of its divisors is an integer number (63882).

2^1069728 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 1069728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533168).

1069728 is an abundant number, since it is smaller than the sum of its proper divisors (1996608).

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

1069728 is a wasteful number, since it uses less digits than its factorization.

1069728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1069728 is about 1034.2765587598. The cubic root of 1069728 is about 102.2722446487.

The spelling of 1069728 in words is "one million, sixty-nine thousand, seven hundred twenty-eight".