28681051 has 16 divisors (see below), whose sum is σ = 34905600. Its totient is φ = 23018688.

The previous prime is 28681007. The next prime is 28681063. The reversal of 28681051 is 15018682.

It is not a de Polignac number, because 28681051 - 2¹⁵ = 28648283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28681001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10626 + ... + 13048.

It is an arithmetic number, because the mean of its divisors is an integer number (2181600).

Almost surely, 2^28681051 is an apocalyptic number.

28681051 is a deficient number, since it is larger than the sum of its proper divisors (6224549).

28681051 is a wasteful number, since it uses less digits than its factorization.

28681051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538.

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

The square root of 28681051 is about 5355.4692604850. The cubic root of 28681051 is about 306.1011918451.

The spelling of 28681051 in words is "twenty-eight million, six hundred eighty-one thousand, fifty-one".