28076081 has 16 divisors (see below), whose sum is σ = 31814208. Its totient is φ = 24552000.

The previous prime is 28076057. The next prime is 28076101. The reversal of 28076081 is 18067082.

It is not a de Polignac number, because 28076081 - 2²² = 23881777 is a prime.

It is a super-2 number, since 2×28076081² = 1576532648637122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28076681) 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 15 ways as a sum of consecutive naturals, for example, 40766 + ... + 41448.

It is an arithmetic number, because the mean of its divisors is an integer number (1988388).

Almost surely, 2^28076081 is an apocalyptic number.

It is an amenable number.

28076081 is a deficient number, since it is larger than the sum of its proper divisors (3738127).

28076081 is a wasteful number, since it uses less digits than its factorization.

28076081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28076081 is about 5298.6867240855. The cubic root of 28076081 is about 303.9336802756.

It can be divided in two parts, 2807 and 6081, that added together give a palindrome (8888).

The spelling of 28076081 in words is "twenty-eight million, seventy-six thousand, eighty-one".