28980693 has 16 divisors (see below), whose sum is σ = 49068160. Its totient is φ = 16560288.

The previous prime is 28980689. The next prime is 28980701. The reversal of 28980693 is 39608982.

It is not a de Polignac number, because 28980693 - 2² = 28980689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28980613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76480 + ... + 76857.

It is an arithmetic number, because the mean of its divisors is an integer number (3066760).

Almost surely, 2^28980693 is an apocalyptic number.

It is an amenable number.

28980693 is a deficient number, since it is larger than the sum of its proper divisors (20087467).

28980693 is a wasteful number, since it uses less digits than its factorization.

28980693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153353 (or 153347 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 28980693 is about 5383.3718987267. The cubic root of 28980693 is about 307.1634867186.

The spelling of 28980693 in words is "twenty-eight million, nine hundred eighty thousand, six hundred ninety-three".