28806051 has 8 divisors (see below), whose sum is σ = 40078080. Its totient is φ = 18369032.

The previous prime is 28805999. The next prime is 28806053. The reversal of 28806051 is 15060882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28806051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28806053) 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, 208671 + ... + 208808.

It is an arithmetic number, because the mean of its divisors is an integer number (5009760).

Almost surely, 2^28806051 is an apocalyptic number.

28806051 is a deficient number, since it is larger than the sum of its proper divisors (11272029).

28806051 is a wasteful number, since it uses less digits than its factorization.

28806051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417505.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 28806051 is about 5367.1268850289. The cubic root of 28806051 is about 306.5452387614.

The spelling of 28806051 in words is "twenty-eight million, eight hundred six thousand, fifty-one".