28049793 has 4 divisors (see below), whose sum is σ = 37399728. Its totient is φ = 18699860.

The previous prime is 28049789. The next prime is 28049797. The reversal of 28049793 is 39794082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (28049789) and next prime (28049797).

It is a cyclic number.

It is not a de Polignac number, because 28049793 - 2² = 28049789 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28049797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4674963 + ... + 4674968.

It is an arithmetic number, because the mean of its divisors is an integer number (9349932).

Almost surely, 2^28049793 is an apocalyptic number.

It is an amenable number.

28049793 is a deficient number, since it is larger than the sum of its proper divisors (9349935).

28049793 is an equidigital number, since it uses as much as digits as its factorization.

28049793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349934.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 28049793 is about 5296.2055284892. The cubic root of 28049793 is about 303.8387916342.

The spelling of 28049793 in words is "twenty-eight million, forty-nine thousand, seven hundred ninety-three".