28610851 has 4 divisors (see below), whose sum is σ = 28769104. Its totient is φ = 28452600.

The previous prime is 28610839. The next prime is 28610863. The reversal of 28610851 is 15801682.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28610839) and next prime (28610863).

It is a cyclic number.

It is not a de Polignac number, because 28610851 - 2⁷ = 28610723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28610821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78855 + ... + 79216.

It is an arithmetic number, because the mean of its divisors is an integer number (7192276).

Almost surely, 2^28610851 is an apocalyptic number.

28610851 is a deficient number, since it is larger than the sum of its proper divisors (158253).

28610851 is a wasteful number, since it uses less digits than its factorization.

28610851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158252.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 28610851 is about 5348.9111976177. The cubic root of 28610851 is about 305.8512491309.

The spelling of 28610851 in words is "twenty-eight million, six hundred ten thousand, eight hundred fifty-one".