28470851 has 8 divisors (see below), whose sum is σ = 29357664. Its totient is φ = 27593280.

The previous prime is 28470847. The next prime is 28470853. The reversal of 28470851 is 15807482.

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 28470851 - 2² = 28470847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28470853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4226 + ... + 8648.

It is an arithmetic number, because the mean of its divisors is an integer number (3669708).

Almost surely, 2^28470851 is an apocalyptic number.

28470851 is a deficient number, since it is larger than the sum of its proper divisors (886813).

28470851 is a wasteful number, since it uses less digits than its factorization.

28470851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 28470851 is about 5335.8083736206. The cubic root of 28470851 is about 305.3515645068.

The spelling of 28470851 in words is "twenty-eight million, four hundred seventy thousand, eight hundred fifty-one".