28485791 has 2 divisors, whose sum is σ = 28485792. Its totient is φ = 28485790.

The previous prime is 28485781. The next prime is 28485803. The reversal of 28485791 is 19758482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28485791 - 2¹⁰ = 28484767 is a prime.

It is a super-2 number, since 2×28485791² = 1622880577791362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28485701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14242895 + 14242896.

It is an arithmetic number, because the mean of its divisors is an integer number (14242896).

Almost surely, 2^28485791 is an apocalyptic number.

28485791 is a deficient number, since it is larger than the sum of its proper divisors (1).

28485791 is an equidigital number, since it uses as much as digits as its factorization.

28485791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 28485791 is about 5337.2081653239. The cubic root of 28485791 is about 305.4049659623.

The spelling of 28485791 in words is "twenty-eight million, four hundred eighty-five thousand, seven hundred ninety-one".