28067039 has 24 divisors (see below), whose sum is σ = 37984800. Its totient is φ = 20180160.

The previous prime is 28067029. The next prime is 28067057. The reversal of 28067039 is 93076082.

It is a de Polignac number, because none of the positive numbers 2^k-28067039 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28067029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9737 + ... + 12285.

It is an arithmetic number, because the mean of its divisors is an integer number (1582700).

Almost surely, 2^28067039 is an apocalyptic number.

28067039 is a deficient number, since it is larger than the sum of its proper divisors (9917761).

28067039 is a wasteful number, since it uses less digits than its factorization.

28067039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591 (or 2580 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 28067039 is about 5297.8334250899. The cubic root of 28067039 is about 303.9010491377.

The spelling of 28067039 in words is "twenty-eight million, sixty-seven thousand, thirty-nine".