128233503 has 16 divisors (see below), whose sum is σ = 190536960. Its totient is φ = 85236408.

The previous prime is 128233481. The next prime is 128233537. The reversal of 128233503 is 305332821.

128233503 is a `hidden beast` number, since 128 + 2 + 33 + 503 = 666.

It is not a de Polignac number, because 128233503 - 2⁵ = 128233471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128233583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2526 + ... + 16212.

It is an arithmetic number, because the mean of its divisors is an integer number (11908560).

Almost surely, 2^128233503 is an apocalyptic number.

128233503 is a deficient number, since it is larger than the sum of its proper divisors (62303457).

128233503 is a wasteful number, since it uses less digits than its factorization.

128233503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14043 (or 14037 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 128233503 is about 11324.0232691389. The cubic root of 128233503 is about 504.2746872824.

The spelling of 128233503 in words is "one hundred twenty-eight million, two hundred thirty-three thousand, five hundred three".