28590069 has 8 divisors (see below), whose sum is σ = 38234560. Its totient is φ = 19002816.

The previous prime is 28590047. The next prime is 28590101. The reversal of 28590069 is 96009582.

It is a happy number.

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

It is not a de Polignac number, because 28590069 - 2⁹ = 28589557 is a prime.

It is a super-2 number, since 2×28590069² = 1634784090849522, 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 (28590769) 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, 13129 + ... + 15150.

It is an arithmetic number, because the mean of its divisors is an integer number (4779320).

Almost surely, 2^28590069 is an apocalyptic number.

It is an amenable number.

28590069 is a deficient number, since it is larger than the sum of its proper divisors (9644491).

28590069 is a wasteful number, since it uses less digits than its factorization.

28590069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28619.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 28590069 is about 5346.9682063764. The cubic root of 28590069 is about 305.7771776972. Note that the first 3 decimals are identical.

The spelling of 28590069 in words is "twenty-eight million, five hundred ninety thousand, sixty-nine".