128296653 has 4 divisors (see below), whose sum is σ = 171062208. Its totient is φ = 85531100.

The previous prime is 128296577. The next prime is 128296661. The reversal of 128296653 is 356692821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128296653 - 2⁹ = 128296141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128296153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21382773 + ... + 21382778.

It is an arithmetic number, because the mean of its divisors is an integer number (42765552).

Almost surely, 2^128296653 is an apocalyptic number.

It is an amenable number.

128296653 is a deficient number, since it is larger than the sum of its proper divisors (42765555).

128296653 is an equidigital number, since it uses as much as digits as its factorization.

128296653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42765554.

The product of its digits is 155520, while the sum is 42.

The square root of 128296653 is about 11326.8112458891. The cubic root of 128296653 is about 504.3574522378.

The spelling of 128296653 in words is "one hundred twenty-eight million, two hundred ninety-six thousand, six hundred fifty-three".