28469057 has 2 divisors, whose sum is σ = 28469058. Its totient is φ = 28469056.

The previous prime is 28469041. The next prime is 28469069. The reversal of 28469057 is 75096482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17172736 + 11296321 = 4144^2 + 3361^2 .

It is a cyclic number.

It is not a de Polignac number, because 28469057 - 2⁴ = 28469041 is a prime.

It is a Chen prime.

It is equal to p_1768766 and since 28469057 and 1768766 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28469017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14234528 + 14234529.

It is an arithmetic number, because the mean of its divisors is an integer number (14234529).

Almost surely, 2^28469057 is an apocalyptic number.

It is an amenable number.

28469057 is a deficient number, since it is larger than the sum of its proper divisors (1).

28469057 is an equidigital number, since it uses as much as digits as its factorization.

28469057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 28469057 is about 5335.6402614869. The cubic root of 28469057 is about 305.3451507867.

The spelling of 28469057 in words is "twenty-eight million, four hundred sixty-nine thousand, fifty-seven".