28064047 has 8 divisors (see below), whose sum is σ = 31035600. Its totient is φ = 25162560.

The previous prime is 28064041. The next prime is 28064051. The reversal of 28064047 is 74046082.

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 28064047 - 2¹⁵ = 28031279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064041) 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, 16672 + ... + 18277.

It is an arithmetic number, because the mean of its divisors is an integer number (3879450).

Almost surely, 2^28064047 is an apocalyptic number.

28064047 is a deficient number, since it is larger than the sum of its proper divisors (2971553).

28064047 is a wasteful number, since it uses less digits than its factorization.

28064047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35033.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 28064047 is about 5297.5510379797. The cubic root of 28064047 is about 303.8902499431.

The spelling of 28064047 in words is "twenty-eight million, sixty-four thousand, forty-seven".