28893323 has 2 divisors, whose sum is σ = 28893324. Its totient is φ = 28893322.

The previous prime is 28893307. The next prime is 28893329. The reversal of 28893323 is 32339882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28893323 - 2⁴ = 28893307 is a prime.

It is a super-2 number, since 2×28893323² = 1669648227964658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28893329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14446661 + 14446662.

It is an arithmetic number, because the mean of its divisors is an integer number (14446662).

Almost surely, 2^28893323 is an apocalyptic number.

28893323 is a deficient number, since it is larger than the sum of its proper divisors (1).

28893323 is an equidigital number, since it uses as much as digits as its factorization.

28893323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 28893323 is about 5375.2509708850. The cubic root of 28893323 is about 306.8545006860.

The spelling of 28893323 in words is "twenty-eight million, eight hundred ninety-three thousand, three hundred twenty-three".