28349043 has 4 divisors (see below), whose sum is σ = 37798728. Its totient is φ = 18899360.

The previous prime is 28349029. The next prime is 28349053. The reversal of 28349043 is 34094382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28349043 - 2¹⁷ = 28217971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28348995 and 28349013.

It is not an unprimeable number, because it can be changed into a prime (28349003) 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, 4724838 + ... + 4724843.

It is an arithmetic number, because the mean of its divisors is an integer number (9449682).

Almost surely, 2^28349043 is an apocalyptic number.

28349043 is a deficient number, since it is larger than the sum of its proper divisors (9449685).

28349043 is an equidigital number, since it uses as much as digits as its factorization.

28349043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9449684.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 28349043 is about 5324.3819359621. The cubic root of 28349043 is about 304.9154759959.

The spelling of 28349043 in words is "twenty-eight million, three hundred forty-nine thousand, forty-three".