28423151 has 2 divisors, whose sum is σ = 28423152. Its totient is φ = 28423150.

The previous prime is 28423139. The next prime is 28423181. The reversal of 28423151 is 15132482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28423151 - 2¹⁰ = 28422127 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28423151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28423121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14211575 + 14211576.

It is an arithmetic number, because the mean of its divisors is an integer number (14211576).

Almost surely, 2^28423151 is an apocalyptic number.

28423151 is a deficient number, since it is larger than the sum of its proper divisors (1).

28423151 is an equidigital number, since it uses as much as digits as its factorization.

28423151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 26.

The square root of 28423151 is about 5331.3366991778. The cubic root of 28423151 is about 305.1809407413.

The spelling of 28423151 in words is "twenty-eight million, four hundred twenty-three thousand, one hundred fifty-one".