28135301 has 2 divisors, whose sum is σ = 28135302. Its totient is φ = 28135300.

The previous prime is 28135277. The next prime is 28135309. The reversal of 28135301 is 10353182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23512801 + 4622500 = 4849^2 + 2150^2 .

It is a cyclic number.

It is not a de Polignac number, because 28135301 - 2²² = 23940997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28135309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14067650 + 14067651.

It is an arithmetic number, because the mean of its divisors is an integer number (14067651).

Almost surely, 2^28135301 is an apocalyptic number.

It is an amenable number.

28135301 is a deficient number, since it is larger than the sum of its proper divisors (1).

28135301 is an equidigital number, since it uses as much as digits as its factorization.

28135301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 28135301 is about 5304.2719575829. The cubic root of 28135301 is about 304.1472228100.

Adding to 28135301 its reverse (10353182), we get a palindrome (38488483).

The spelling of 28135301 in words is "twenty-eight million, one hundred thirty-five thousand, three hundred one".