28025612 has 12 divisors (see below), whose sum is σ = 50627136. Its totient is φ = 13560720.

The previous prime is 28025611. The next prime is 28025623. The reversal of 28025612 is 21652082.

It is not an unprimeable number, because it can be changed into a prime (28025611) 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, 112883 + ... + 113130.

It is an arithmetic number, because the mean of its divisors is an integer number (4218928).

Almost surely, 2^28025612 is an apocalyptic number.

It is an amenable number.

28025612 is a deficient number, since it is larger than the sum of its proper divisors (22601524).

28025612 is a wasteful number, since it uses less digits than its factorization.

28025612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226048 (or 226046 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 28025612 is about 5293.9221754763. The cubic root of 28025612 is about 303.7514560154.

Adding to 28025612 its reverse (21652082), we get a palindrome (49677694).

The spelling of 28025612 in words is "twenty-eight million, twenty-five thousand, six hundred twelve".