28695397 has 2 divisors, whose sum is σ = 28695398. Its totient is φ = 28695396.

The previous prime is 28695391. The next prime is 28695479. The reversal of 28695397 is 79359682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26718561 + 1976836 = 5169^2 + 1406^2 .

It is a cyclic number.

It is not a de Polignac number, because 28695397 - 2³ = 28695389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28695397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28695391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14347698 + 14347699.

It is an arithmetic number, because the mean of its divisors is an integer number (14347699).

Almost surely, 2^28695397 is an apocalyptic number.

It is an amenable number.

28695397 is a deficient number, since it is larger than the sum of its proper divisors (1).

28695397 is an equidigital number, since it uses as much as digits as its factorization.

28695397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 28695397 is about 5356.8084714688. The cubic root of 28695397 is about 306.1522196792.

It can be divided in two parts, 28695 and 397, that added together give a palindrome (29092).

The spelling of 28695397 in words is "twenty-eight million, six hundred ninety-five thousand, three hundred ninety-seven".