128453697 has 24 divisors (see below), whose sum is σ = 192786048. Its totient is φ = 82353600.

The previous prime is 128453639. The next prime is 128453701. The reversal of 128453697 is 796354821.

128453697 is a `hidden beast` number, since 1 + 28 + 4 + 536 + 97 = 666.

It is not a de Polignac number, because 128453697 - 2⁷ = 128453569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128453497) 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, 23748 + ... + 28650.

It is an arithmetic number, because the mean of its divisors is an integer number (8032752).

Almost surely, 2^128453697 is an apocalyptic number.

It is an amenable number.

128453697 is a deficient number, since it is larger than the sum of its proper divisors (64332351).

128453697 is a wasteful number, since it uses less digits than its factorization.

128453697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021 (or 5018 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 128453697 is about 11333.7415269628. The cubic root of 128453697 is about 504.5631578267.

The spelling of 128453697 in words is "one hundred twenty-eight million, four hundred fifty-three thousand, six hundred ninety-seven".