128401383 has 8 divisors (see below), whose sum is σ = 186765696. Its totient is φ = 77819000.

The previous prime is 128401363. The next prime is 128401417. The reversal of 128401383 is 383104821.

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 128401383 - 2⁸ = 128401127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128401383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128401303) 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, 1945443 + ... + 1945508.

It is an arithmetic number, because the mean of its divisors is an integer number (23345712).

Almost surely, 2^128401383 is an apocalyptic number.

128401383 is a deficient number, since it is larger than the sum of its proper divisors (58364313).

128401383 is a wasteful number, since it uses less digits than its factorization.

128401383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890965.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 128401383 is about 11331.4334044727. The cubic root of 128401383 is about 504.4946524644.

The spelling of 128401383 in words is "one hundred twenty-eight million, four hundred one thousand, three hundred eighty-three".