128882791 has 2 divisors, whose sum is σ = 128882792. Its totient is φ = 128882790.

The previous prime is 128882773. The next prime is 128882801. The reversal of 128882791 is 197288821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128882791 - 2¹⁷ = 128751719 is a prime.

It is a super-2 number, since 2×128882791² = 33221547631899362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128882701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64441395 + 64441396.

It is an arithmetic number, because the mean of its divisors is an integer number (64441396).

Almost surely, 2^128882791 is an apocalyptic number.

128882791 is a deficient number, since it is larger than the sum of its proper divisors (1).

128882791 is an equidigital number, since it uses as much as digits as its factorization.

128882791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 46.

The square root of 128882791 is about 11352.6556805005. The cubic root of 128882791 is about 505.1243571794.

The spelling of 128882791 in words is "one hundred twenty-eight million, eight hundred eighty-two thousand, seven hundred ninety-one".