28834993 has 8 divisors (see below), whose sum is σ = 31596480. Its totient is φ = 26096880.

The previous prime is 28834979. The next prime is 28834997. The reversal of 28834993 is 39943882.

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 28834993 - 2¹³ = 28826801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28834997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3205 + ... + 8242.

It is an arithmetic number, because the mean of its divisors is an integer number (3949560).

Almost surely, 2^28834993 is an apocalyptic number.

It is an amenable number.

28834993 is a deficient number, since it is larger than the sum of its proper divisors (2761487).

28834993 is a wasteful number, since it uses less digits than its factorization.

28834993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11687.

The product of its digits is 373248, while the sum is 46.

The square root of 28834993 is about 5369.8224365429. The cubic root of 28834993 is about 306.6478683867.

Subtracting 28834993 from its reverse (39943882), we obtain a square (11108889 = 3333²).

The spelling of 28834993 in words is "twenty-eight million, eight hundred thirty-four thousand, nine hundred ninety-three".