128824065 has 24 divisors (see below), whose sum is σ = 230500608. Its totient is φ = 66489120.

The previous prime is 128824063. The next prime is 128824067. The reversal of 128824065 is 560428821.

It is an interprime number because it is at equal distance from previous prime (128824063) and next prime (128824067).

It is not a de Polignac number, because 128824065 - 2¹ = 128824063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128824063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44779 + ... + 47568.

It is an arithmetic number, because the mean of its divisors is an integer number (9604192).

Almost surely, 2^128824065 is an apocalyptic number.

128824065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128824065 is a deficient number, since it is larger than the sum of its proper divisors (101676543).

128824065 is a wasteful number, since it uses less digits than its factorization.

128824065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92389 (or 92386 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 128824065 is about 11350.0689425219. The cubic root of 128824065 is about 505.0476248259.

The spelling of 128824065 in words is "one hundred twenty-eight million, eight hundred twenty-four thousand, sixty-five".