28303027 has 4 divisors (see below), whose sum is σ = 29792680. Its totient is φ = 26813376.

The previous prime is 28303021. The next prime is 28303057. The reversal of 28303027 is 72030382.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72030382 = 2 ⋅36015191.

It is a cyclic number.

It is not a de Polignac number, because 28303027 - 2³ = 28303019 is a prime.

It is a super-2 number, since 2×28303027² = 1602122674725458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28302992 and 28303010.

It is not an unprimeable number, because it can be changed into a prime (28303021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744798 + ... + 744835.

It is an arithmetic number, because the mean of its divisors is an integer number (7448170).

Almost surely, 2^28303027 is an apocalyptic number.

28303027 is a deficient number, since it is larger than the sum of its proper divisors (1489653).

28303027 is a wasteful number, since it uses less digits than its factorization.

28303027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489652.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 28303027 is about 5320.0589282451. The cubic root of 28303027 is about 304.7504076481.

The spelling of 28303027 in words is "twenty-eight million, three hundred three thousand, twenty-seven".