128948403 has 8 divisors (see below), whose sum is σ = 176124816. Its totient is φ = 83868800.

The previous prime is 128948381. The next prime is 128948423. The reversal of 128948403 is 304849821.

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 128948403 - 2¹³ = 128940211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128948423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524058 + ... + 524303.

It is an arithmetic number, because the mean of its divisors is an integer number (22015602).

Almost surely, 2^128948403 is an apocalyptic number.

128948403 is a deficient number, since it is larger than the sum of its proper divisors (47176413).

128948403 is a wasteful number, since it uses less digits than its factorization.

128948403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048405.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 128948403 is about 11355.5450331545. The cubic root of 128948403 is about 505.2100593294.

The spelling of 128948403 in words is "one hundred twenty-eight million, nine hundred forty-eight thousand, four hundred three".