28923113 has 2 divisors, whose sum is σ = 28923114. Its totient is φ = 28923112.

The previous prime is 28923091. The next prime is 28923119. The reversal of 28923113 is 31132982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14845609 + 14077504 = 3853^2 + 3752^2 .

It is a cyclic number.

It is not a de Polignac number, because 28923113 - 2⁸ = 28922857 is a prime.

It is a super-2 number, since 2×28923113² = 1673092931221538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28923119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461556 + 14461557.

It is an arithmetic number, because the mean of its divisors is an integer number (14461557).

Almost surely, 2^28923113 is an apocalyptic number.

It is an amenable number.

28923113 is a deficient number, since it is larger than the sum of its proper divisors (1).

28923113 is an equidigital number, since it uses as much as digits as its factorization.

28923113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 28923113 is about 5378.0212904004. The cubic root of 28923113 is about 306.9599236096.

The spelling of 28923113 in words is "twenty-eight million, nine hundred twenty-three thousand, one hundred thirteen".