28881027 has 24 divisors (see below), whose sum is σ = 47829600. Its totient is φ = 16450560.

The previous prime is 28881001. The next prime is 28881037. The reversal of 28881027 is 72018882.

It is not a de Polignac number, because 28881027 - 2⁶ = 28880963 is a prime.

It is a super-2 number, since 2×28881027² = 1668227441149458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28880982 and 28881000.

It is not an unprimeable number, because it can be changed into a prime (28881037) 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 23 ways as a sum of consecutive naturals, for example, 27777 + ... + 28797.

It is an arithmetic number, because the mean of its divisors is an integer number (1992900).

Almost surely, 2^28881027 is an apocalyptic number.

28881027 is a deficient number, since it is larger than the sum of its proper divisors (18948573).

28881027 is a wasteful number, since it uses less digits than its factorization.

28881027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 28881027 is about 5374.1070886241. The cubic root of 28881027 is about 306.8109656185.

The spelling of 28881027 in words is "twenty-eight million, eight hundred eighty-one thousand, twenty-seven".