28469069 has 2 divisors, whose sum is σ = 28469070. Its totient is φ = 28469068.

The previous prime is 28469057. The next prime is 28469099. The reversal of 28469069 is 96096482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15602500 + 12866569 = 3950^2 + 3587^2 .

It is a cyclic number.

It is not a de Polignac number, because 28469069 - 2⁸ = 28468813 is a prime.

It is a super-2 number, since 2×28469069² = 1620975779453522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28469029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14234534 + 14234535.

It is an arithmetic number, because the mean of its divisors is an integer number (14234535).

Almost surely, 2^28469069 is an apocalyptic number.

It is an amenable number.

28469069 is a deficient number, since it is larger than the sum of its proper divisors (1).

28469069 is an equidigital number, since it uses as much as digits as its factorization.

28469069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 28469069 is about 5335.6413860004. The cubic root of 28469069 is about 305.3451936887.

The spelling of 28469069 in words is "twenty-eight million, four hundred sixty-nine thousand, sixty-nine".