128761393 has 8 divisors (see below), whose sum is σ = 131989088. Its totient is φ = 125544384.

The previous prime is 128761379. The next prime is 128761439. The reversal of 128761393 is 393167821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128761393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128761333) 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, 25321 + ... + 29977.

It is an arithmetic number, because the mean of its divisors is an integer number (16498636).

Almost surely, 2^128761393 is an apocalyptic number.

It is an amenable number.

128761393 is a deficient number, since it is larger than the sum of its proper divisors (3227695).

128761393 is an equidigital number, since it uses as much as digits as its factorization.

128761393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343.

The product of its digits is 54432, while the sum is 40.

The square root of 128761393 is about 11347.3077423678. The cubic root of 128761393 is about 504.9657108372.

The spelling of 128761393 in words is "one hundred twenty-eight million, seven hundred sixty-one thousand, three hundred ninety-three".