28600069 has 8 divisors (see below), whose sum is σ = 30584088. Its totient is φ = 26649600.

The previous prime is 28600067. The next prime is 28600079. The reversal of 28600069 is 96000682.

It can be written as a sum of positive squares in 4 ways, for example, as 24750625 + 3849444 = 4975^2 + 1962^2 .

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 28600069 - 2¹ = 28600067 is a prime.

It is a super-2 number, since 2×28600069² = 1635927893609522, 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 28600069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28600067) 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, 6612 + ... + 10045.

It is an arithmetic number, because the mean of its divisors is an integer number (3823011).

Almost surely, 2^28600069 is an apocalyptic number.

It is an amenable number.

28600069 is a deficient number, since it is larger than the sum of its proper divisors (1984019).

28600069 is a wasteful number, since it uses less digits than its factorization.

28600069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16775.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 28600069 is about 5347.9032339787. The cubic root of 28600069 is about 305.8128242865.

The spelling of 28600069 in words is "twenty-eight million, six hundred thousand, sixty-nine".