28753157 has 2 divisors, whose sum is σ = 28753158. Its totient is φ = 28753156.

The previous prime is 28753139. The next prime is 28753159. The reversal of 28753157 is 75135782.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18931201 + 9821956 = 4351^2 + 3134^2 .

It is a cyclic number.

It is not a de Polignac number, because 28753157 - 2⁶ = 28753093 is a prime.

Together with 28753159, it forms a pair of twin primes.

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 28753157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28753159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14376578 + 14376579.

It is an arithmetic number, because the mean of its divisors is an integer number (14376579).

Almost surely, 2^28753157 is an apocalyptic number.

It is an amenable number.

28753157 is a deficient number, since it is larger than the sum of its proper divisors (1).

28753157 is an equidigital number, since it uses as much as digits as its factorization.

28753157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 38.

The square root of 28753157 is about 5362.1970310685. The cubic root of 28753157 is about 306.3574965130.

The spelling of 28753157 in words is "twenty-eight million, seven hundred fifty-three thousand, one hundred fifty-seven".