28922263 has 4 divisors (see below), whose sum is σ = 29270808. Its totient is φ = 28573720.

The previous prime is 28922233. The next prime is 28922269. The reversal of 28922263 is 36222982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36222982 = 2 ⋅18111491.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28922263 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 (28922269) 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, 174148 + ... + 174313.

It is an arithmetic number, because the mean of its divisors is an integer number (7317702).

Almost surely, 2^28922263 is an apocalyptic number.

28922263 is a deficient number, since it is larger than the sum of its proper divisors (348545).

28922263 is an equidigital number, since it uses as much as digits as its factorization.

28922263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348544.

The product of its digits is 20736, while the sum is 34.

The square root of 28922263 is about 5377.9422644725. The cubic root of 28922263 is about 306.9569165740.

The spelling of 28922263 in words is "twenty-eight million, nine hundred twenty-two thousand, two hundred sixty-three".