28029628 has 24 divisors (see below), whose sum is σ = 53907840. Its totient is φ = 12646320.

The previous prime is 28029623. The next prime is 28029641. The reversal of 28029628 is 82692082.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28029623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3825 + ... + 8407.

It is an arithmetic number, because the mean of its divisors is an integer number (2246160).

Almost surely, 2^28029628 is an apocalyptic number.

It is an amenable number.

28029628 is a deficient number, since it is larger than the sum of its proper divisors (25878212).

28029628 is a wasteful number, since it uses less digits than its factorization.

28029628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737 (or 4735 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 28029628 is about 5294.3014647827. The cubic root of 28029628 is about 303.7659642634.

The spelling of 28029628 in words is "twenty-eight million, twenty-nine thousand, six hundred twenty-eight".