28964039 has 8 divisors (see below), whose sum is σ = 33027120. Its totient is φ = 25163136.

The previous prime is 28964027. The next prime is 28964041. The reversal of 28964039 is 93046982.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28964039 - 2¹⁶ = 28898503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28963987 and 28964005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28964009) 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, 65309 + ... + 65750.

It is an arithmetic number, because the mean of its divisors is an integer number (4128390).

Almost surely, 2^28964039 is an apocalyptic number.

28964039 is a deficient number, since it is larger than the sum of its proper divisors (4063081).

28964039 is a wasteful number, since it uses less digits than its factorization.

28964039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131089.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 28964039 is about 5381.8248763779. The cubic root of 28964039 is about 307.1046374138.

The spelling of 28964039 in words is "twenty-eight million, nine hundred sixty-four thousand, thirty-nine".