28564051 has 8 divisors (see below), whose sum is σ = 29611008. Its totient is φ = 27525000.

The previous prime is 28564031. The next prime is 28564057. The reversal of 28564051 is 15046582.

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 28564051 - 2⁷ = 28563923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28564057) 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, 5946 + ... + 9616.

It is an arithmetic number, because the mean of its divisors is an integer number (3701376).

Almost surely, 2^28564051 is an apocalyptic number.

28564051 is a deficient number, since it is larger than the sum of its proper divisors (1046957).

28564051 is a wasteful number, since it uses less digits than its factorization.

28564051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 28564051 is about 5344.5346850778. The cubic root of 28564051 is about 305.6843934375.

The spelling of 28564051 in words is "twenty-eight million, five hundred sixty-four thousand, fifty-one".