28001612 has 12 divisors (see below), whose sum is σ = 49040376. Its totient is φ = 13990080.

The previous prime is 28001609. The next prime is 28001621. The reversal of 28001612 is 21610082.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7412 + ... + 10532.

It is an arithmetic number, because the mean of its divisors is an integer number (4086698).

Almost surely, 2^28001612 is an apocalyptic number.

It is an amenable number.

28001612 is a deficient number, since it is larger than the sum of its proper divisors (21038764).

28001612 is a wasteful number, since it uses less digits than its factorization.

28001612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368 (or 5366 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 28001612 is about 5291.6549396196. The cubic root of 28001612 is about 303.6647244346.

Adding to 28001612 its reverse (21610082), we get a palindrome (49611694).

The spelling of 28001612 in words is "twenty-eight million, one thousand, six hundred twelve".