128569245 has 32 divisors (see below), whose sum is σ = 242688000. Its totient is φ = 56877120.

The previous prime is 128569237. The next prime is 128569271. The reversal of 128569245 is 542965821.

It is not a de Polignac number, because 128569245 - 2³ = 128569237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128569197 and 128569206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16495 + ... + 23004.

It is an arithmetic number, because the mean of its divisors is an integer number (7584000).

Almost surely, 2^128569245 is an apocalyptic number.

128569245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128569245 is a deficient number, since it is larger than the sum of its proper divisors (114118755).

128569245 is a wasteful number, since it uses less digits than its factorization.

128569245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39545.

The product of its digits is 172800, while the sum is 42.

The square root of 128569245 is about 11338.8379034185. The cubic root of 128569245 is about 504.7144024453.

The spelling of 128569245 in words is "one hundred twenty-eight million, five hundred sixty-nine thousand, two hundred forty-five".