28006036 has 12 divisors (see below), whose sum is σ = 49094080. Its totient is φ = 13979160.

The previous prime is 28006001. The next prime is 28006039. The reversal of 28006036 is 63060082.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28006036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28006039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3180 + ... + 8131.

Almost surely, 2^28006036 is an apocalyptic number.

It is an amenable number.

28006036 is a deficient number, since it is larger than the sum of its proper divisors (21088044).

28006036 is a wasteful number, since it uses less digits than its factorization.

28006036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11934 (or 11932 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 28006036 is about 5292.0729397846. The cubic root of 28006036 is about 303.6807156806.

It can be divided in two parts, 2800 and 6036, that added together give a square (8836 = 94²).

The spelling of 28006036 in words is "twenty-eight million, six thousand, thirty-six".