128488503 has 24 divisors (see below), whose sum is σ = 202383360. Its totient is φ = 71878560.

The previous prime is 128488501. The next prime is 128488517. The reversal of 128488503 is 305884821.

It is not a de Polignac number, because 128488503 - 2¹ = 128488501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128488501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5943 + ... + 17096.

It is an arithmetic number, because the mean of its divisors is an integer number (8432640).

Almost surely, 2^128488503 is an apocalyptic number.

128488503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128488503 is a deficient number, since it is larger than the sum of its proper divisors (73894857).

128488503 is a wasteful number, since it uses less digits than its factorization.

128488503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23079 (or 23066 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 128488503 is about 11335.2769264804. The cubic root of 128488503 is about 504.6087260995.

The spelling of 128488503 in words is "one hundred twenty-eight million, four hundred eighty-eight thousand, five hundred three".