28153901 has 2 divisors, whose sum is σ = 28153902. Its totient is φ = 28153900.

The previous prime is 28153889. The next prime is 28153903. The reversal of 28153901 is 10935182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15721225 + 12432676 = 3965^2 + 3526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28153901 is a prime.

Together with 28153903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28153903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14076950 + 14076951.

It is an arithmetic number, because the mean of its divisors is an integer number (14076951).

Almost surely, 2^28153901 is an apocalyptic number.

It is an amenable number.

28153901 is a deficient number, since it is larger than the sum of its proper divisors (1).

28153901 is an equidigital number, since it uses as much as digits as its factorization.

28153901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 28153901 is about 5306.0249716714. The cubic root of 28153901 is about 304.2142310638.

The spelling of 28153901 in words is "twenty-eight million, one hundred fifty-three thousand, nine hundred one".