128976293 has 8 divisors (see below), whose sum is σ = 131204640. Its totient is φ = 126766800.

The previous prime is 128976277. The next prime is 128976347. The reversal of 128976293 is 392679821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128976293 - 2⁴ = 128976277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128976223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9446 + ... + 18632.

It is an arithmetic number, because the mean of its divisors is an integer number (16400580).

Almost surely, 2^128976293 is an apocalyptic number.

It is an amenable number.

128976293 is a deficient number, since it is larger than the sum of its proper divisors (2228347).

128976293 is a wasteful number, since it uses less digits than its factorization.

128976293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9427.

The product of its digits is 326592, while the sum is 47.

The square root of 128976293 is about 11356.7730011654. The cubic root of 128976293 is about 505.2464803384.

The spelling of 128976293 in words is "one hundred twenty-eight million, nine hundred seventy-six thousand, two hundred ninety-three".