28980039 has 8 divisors (see below), whose sum is σ = 42152832. Its totient is φ = 17563640.

The previous prime is 28980013. The next prime is 28980047. The reversal of 28980039 is 93008982.

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 28980039 - 2¹³ = 28971847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28979979 and 28980006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28980089) 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, 439059 + ... + 439124.

It is an arithmetic number, because the mean of its divisors is an integer number (5269104).

Almost surely, 2^28980039 is an apocalyptic number.

28980039 is a deficient number, since it is larger than the sum of its proper divisors (13172793).

28980039 is a wasteful number, since it uses less digits than its factorization.

28980039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878197.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 28980039 is about 5383.3111557851. The cubic root of 28980039 is about 307.1611761409.

The spelling of 28980039 in words is "twenty-eight million, nine hundred eighty thousand, thirty-nine".