128757963 has 8 divisors (see below), whose sum is σ = 173197008. Its totient is φ = 85078784.

The previous prime is 128757961. The next prime is 128757977. The reversal of 128757963 is 369757821.

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 128757963 - 2¹ = 128757961 is a prime.

It is a super-2 number, since 2×128757963² = 33157226071818738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128757961) 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, 189570 + ... + 190247.

It is an arithmetic number, because the mean of its divisors is an integer number (21649626).

Almost surely, 2^128757963 is an apocalyptic number.

128757963 is a deficient number, since it is larger than the sum of its proper divisors (44439045).

128757963 is a wasteful number, since it uses less digits than its factorization.

128757963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379933.

The product of its digits is 635040, while the sum is 48.

The square root of 128757963 is about 11347.1566041894. The cubic root of 128757963 is about 504.9612269679.

The spelling of 128757963 in words is "one hundred twenty-eight million, seven hundred fifty-seven thousand, nine hundred sixty-three".