28584169 has 8 divisors (see below), whose sum is σ = 29756160. Its totient is φ = 27424656.

The previous prime is 28584137. The next prime is 28584181. The reversal of 28584169 is 96148582.

It is a happy number.

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 28584169 - 2⁵ = 28584137 is a prime.

It is a super-2 number, since 2×28584169² = 1634109434841122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28581169) 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, 1704 + ... + 7750.

It is an arithmetic number, because the mean of its divisors is an integer number (3719520).

Almost surely, 2^28584169 is an apocalyptic number.

28584169 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28584169 is a deficient number, since it is larger than the sum of its proper divisors (1171991).

28584169 is a wasteful number, since it uses less digits than its factorization.

28584169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6239.

The product of its digits is 138240, while the sum is 43.

The square root of 28584169 is about 5346.4164633893. The cubic root of 28584169 is about 305.7561423106.

The spelling of 28584169 in words is "twenty-eight million, five hundred eighty-four thousand, one hundred sixty-nine".