128469393 has 24 divisors (see below), whose sum is σ = 210362880. Its totient is φ = 74895840.

The previous prime is 128469371. The next prime is 128469401. The reversal of 128469393 is 393964821.

It is a happy number.

It is not a de Polignac number, because 128469393 - 2¹⁰ = 128468369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128469353) 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, 26673 + ... + 31118.

It is an arithmetic number, because the mean of its divisors is an integer number (8765120).

Almost surely, 2^128469393 is an apocalyptic number.

128469393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

128469393 is a deficient number, since it is larger than the sum of its proper divisors (81893487).

128469393 is a wasteful number, since it uses less digits than its factorization.

128469393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57829 (or 57826 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 128469393 is about 11334.4339514596. The cubic root of 128469393 is about 504.5837081650.

The spelling of 128469393 in words is "one hundred twenty-eight million, four hundred sixty-nine thousand, three hundred ninety-three".