28025769 has 8 divisors (see below), whose sum is σ = 37425600. Its totient is φ = 18654896.

The previous prime is 28025749. The next prime is 28025791. The reversal of 28025769 is 96752082.

It is a happy number.

28025769 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28025769 - 2⁵ = 28025737 is a prime.

It is a super-2 number, since 2×28025769² = 1570887456082722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28025719) 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, 4869 + ... + 8930.

It is an arithmetic number, because the mean of its divisors is an integer number (4678200).

Almost surely, 2^28025769 is an apocalyptic number.

It is an amenable number.

28025769 is a deficient number, since it is larger than the sum of its proper divisors (9399831).

28025769 is a wasteful number, since it uses less digits than its factorization.

28025769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14479.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 28025769 is about 5293.9370037808. The cubic root of 28025769 is about 303.7520232215.

The spelling of 28025769 in words is "twenty-eight million, twenty-five thousand, seven hundred sixty-nine".