28783349 has 8 divisors (see below), whose sum is σ = 32976768. Its totient is φ = 24610320.

The previous prime is 28783331. The next prime is 28783357. The reversal of 28783349 is 94338782.

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

It is not a de Polignac number, because 28783349 - 2²⁴ = 12006133 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 (28783319) 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, 1937 + ... + 7830.

It is an arithmetic number, because the mean of its divisors is an integer number (4122096).

Almost surely, 2^28783349 is an apocalyptic number.

It is an amenable number.

28783349 is a deficient number, since it is larger than the sum of its proper divisors (4193419).

28783349 is an equidigital number, since it uses as much as digits as its factorization.

28783349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10195.

The product of its digits is 290304, while the sum is 44.

The square root of 28783349 is about 5365.0115563715. The cubic root of 28783349 is about 306.4646883360.

The spelling of 28783349 in words is "twenty-eight million, seven hundred eighty-three thousand, three hundred forty-nine".