28030825 has 12 divisors (see below), whose sum is σ = 34850448. Its totient is φ = 22365200.

The previous prime is 28030823. The next prime is 28030829. The reversal of 28030825 is 52803082.

It is not a de Polignac number, because 28030825 - 2¹ = 28030823 is a prime.

It is a super-3 number, since 3×28030825³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28030793 and 28030802.

It is not an unprimeable number, because it can be changed into a prime (28030823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9810 + ... + 12340.

It is an arithmetic number, because the mean of its divisors is an integer number (2904204).

Almost surely, 2^28030825 is an apocalyptic number.

28030825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28030825 is a deficient number, since it is larger than the sum of its proper divisors (6819623).

28030825 is a wasteful number, since it uses less digits than its factorization.

28030825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 28030825 is about 5294.4145096507. The cubic root of 28030825 is about 303.7702882913.

The spelling of 28030825 in words is "twenty-eight million, thirty thousand, eight hundred twenty-five".