28923119 has 2 divisors, whose sum is σ = 28923120. Its totient is φ = 28923118.

The previous prime is 28923113. The next prime is 28923127. The reversal of 28923119 is 91132982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28923119 is a prime.

It is a super-2 number, since 2×28923119² = 1673093625376322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28923113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461559 + 14461560.

It is an arithmetic number, because the mean of its divisors is an integer number (14461560).

Almost surely, 2^28923119 is an apocalyptic number.

28923119 is a deficient number, since it is larger than the sum of its proper divisors (1).

28923119 is an equidigital number, since it uses as much as digits as its factorization.

28923119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 28923119 is about 5378.0218482264. The cubic root of 28923119 is about 306.9599448355.

The spelling of 28923119 in words is "twenty-eight million, nine hundred twenty-three thousand, one hundred nineteen".