128948683 has 4 divisors (see below), whose sum is σ = 131692320. Its totient is φ = 126205048.

The previous prime is 128948657. The next prime is 128948719. The reversal of 128948683 is 386849821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 386849821 = 29 ⋅13339649.

It is a cyclic number.

It is not a de Polignac number, because 128948683 - 2¹³ = 128940491 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128948783) 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, 1371748 + ... + 1371841.

It is an arithmetic number, because the mean of its divisors is an integer number (32923080).

Almost surely, 2^128948683 is an apocalyptic number.

128948683 is a deficient number, since it is larger than the sum of its proper divisors (2743637).

128948683 is an equidigital number, since it uses as much as digits as its factorization.

128948683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743636.

The product of its digits is 663552, while the sum is 49.

The square root of 128948683 is about 11355.5573619264. The cubic root of 128948683 is about 505.2104250021.

The spelling of 128948683 in words is "one hundred twenty-eight million, nine hundred forty-eight thousand, six hundred eighty-three".