28350263 has 4 divisors (see below), whose sum is σ = 28364520. Its totient is φ = 28336008.

The previous prime is 28350253. The next prime is 28350269. The reversal of 28350263 is 36205382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36205382 = 2 ⋅18102691.

It is a cyclic number.

It is not a de Polignac number, because 28350263 - 2¹⁰ = 28349239 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 (28350269) 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, 3545 + ... + 8322.

It is an arithmetic number, because the mean of its divisors is an integer number (7091130).

Almost surely, 2^28350263 is an apocalyptic number.

28350263 is a deficient number, since it is larger than the sum of its proper divisors (14257).

28350263 is a wasteful number, since it uses less digits than its factorization.

28350263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14256.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 28350263 is about 5324.4965020178. The cubic root of 28350263 is about 304.9198499419.

The spelling of 28350263 in words is "twenty-eight million, three hundred fifty thousand, two hundred sixty-three".