28252057 has 2 divisors, whose sum is σ = 28252058. Its totient is φ = 28252056.

The previous prime is 28252051. The next prime is 28252117. The reversal of 28252057 is 75025282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21261321 + 6990736 = 4611^2 + 2644^2 .

It is a cyclic number.

It is not a de Polignac number, because 28252057 - 2²³ = 19863449 is a prime.

It is not a weakly prime, because it can be changed into another prime (28252051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14126028 + 14126029.

It is an arithmetic number, because the mean of its divisors is an integer number (14126029).

Almost surely, 2^28252057 is an apocalyptic number.

It is an amenable number.

28252057 is a deficient number, since it is larger than the sum of its proper divisors (1).

28252057 is an equidigital number, since it uses as much as digits as its factorization.

28252057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 28252057 is about 5315.2664091276. The cubic root of 28252057 is about 304.5673593592.

The spelling of 28252057 in words is "twenty-eight million, two hundred fifty-two thousand, fifty-seven".