28927957 has 2 divisors, whose sum is σ = 28927958. Its totient is φ = 28927956.

The previous prime is 28927939. The next prime is 28927973. The reversal of 28927957 is 75972982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16719921 + 12208036 = 4089^2 + 3494^2 .

It is a cyclic number.

It is not a de Polignac number, because 28927957 - 2¹¹ = 28925909 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28927957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28927057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14463978 + 14463979.

It is an arithmetic number, because the mean of its divisors is an integer number (14463979).

Almost surely, 2^28927957 is an apocalyptic number.

It is an amenable number.

28927957 is a deficient number, since it is larger than the sum of its proper divisors (1).

28927957 is an equidigital number, since it uses as much as digits as its factorization.

28927957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The square root of 28927957 is about 5378.4716230543. The cubic root of 28927957 is about 306.9770590503.

The spelling of 28927957 in words is "twenty-eight million, nine hundred twenty-seven thousand, nine hundred fifty-seven".