28810669 has 8 divisors (see below), whose sum is σ = 30548000. Its totient is φ = 27095472.

The previous prime is 28810667. The next prime is 28810693. The reversal of 28810669 is 96601882.

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 28810669 - 2¹ = 28810667 is a prime.

It is a super-2 number, since 2×28810669² = 1660109296455122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28810667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2814 + ... + 8095.

It is an arithmetic number, because the mean of its divisors is an integer number (3818500).

Almost surely, 2^28810669 is an apocalyptic number.

It is an amenable number.

28810669 is a deficient number, since it is larger than the sum of its proper divisors (1737331).

28810669 is a wasteful number, since it uses less digits than its factorization.

28810669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11067.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 28810669 is about 5367.5570793425. The cubic root of 28810669 is about 306.5616190036.

The spelling of 28810669 in words is "twenty-eight million, eight hundred ten thousand, six hundred sixty-nine".