28350349 has 4 divisors (see below), whose sum is σ = 28497436. Its totient is φ = 28203264.

The previous prime is 28350347. The next prime is 28350359. The reversal of 28350349 is 94305382.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8369449 + 19980900 = 2893^2 + 4470^2 .

It is a cyclic number.

It is not a de Polignac number, because 28350349 - 2¹ = 28350347 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 (28350341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73254 + ... + 73639.

It is an arithmetic number, because the mean of its divisors is an integer number (7124359).

Almost surely, 2^28350349 is an apocalyptic number.

It is an amenable number.

28350349 is a deficient number, since it is larger than the sum of its proper divisors (147087).

28350349 is a wasteful number, since it uses less digits than its factorization.

28350349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147086.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 28350349 is about 5324.5045778927. The cubic root of 28350349 is about 304.9201582645.

The spelling of 28350349 in words is "twenty-eight million, three hundred fifty thousand, three hundred forty-nine".