28755069 has 16 divisors (see below), whose sum is σ = 44136960. Its totient is φ = 16311600.

The previous prime is 28755061. The next prime is 28755079. The reversal of 28755069 is 96055782.

It is not a de Polignac number, because 28755069 - 2³ = 28755061 is a prime.

It is a super-2 number, since 2×28755069² = 1653707986389522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28755069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28755061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2007 + ... + 7844.

It is an arithmetic number, because the mean of its divisors is an integer number (2758560).

Almost surely, 2^28755069 is an apocalyptic number.

It is an amenable number.

28755069 is a deficient number, since it is larger than the sum of its proper divisors (15381891).

28755069 is a wasteful number, since it uses less digits than its factorization.

28755069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 28755069 is about 5362.3753132357. The cubic root of 28755069 is about 306.3642869853.

The spelling of 28755069 in words is "twenty-eight million, seven hundred fifty-five thousand, sixty-nine".