28946839 has 8 divisors (see below), whose sum is σ = 30689408. Its totient is φ = 27254880.

The previous prime is 28946809. The next prime is 28946849. The reversal of 28946839 is 93864982.

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 28946839 - 2⁵ = 28946807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28946792 and 28946801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28946809) 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, 11472 + ... + 13765.

It is an arithmetic number, because the mean of its divisors is an integer number (3836176).

Almost surely, 2^28946839 is an apocalyptic number.

28946839 is a deficient number, since it is larger than the sum of its proper divisors (1742569).

28946839 is a wasteful number, since it uses less digits than its factorization.

28946839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25305.

The product of its digits is 746496, while the sum is 49.

The square root of 28946839 is about 5380.2266680875. The cubic root of 28946839 is about 307.0438350547.

The spelling of 28946839 in words is "twenty-eight million, nine hundred forty-six thousand, eight hundred thirty-nine".