128303451 has 24 divisors (see below), whose sum is σ = 191877504. Its totient is φ = 82529280.

The previous prime is 128303429. The next prime is 128303489. The reversal of 128303451 is 154303821.

It is a happy number.

It is not a de Polignac number, because 128303451 - 2¹⁹ = 127779163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128303491) 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, 160585 + ... + 161381.

It is an arithmetic number, because the mean of its divisors is an integer number (7994896).

Almost surely, 2^128303451 is an apocalyptic number.

128303451 is a deficient number, since it is larger than the sum of its proper divisors (63574053).

128303451 is a wasteful number, since it uses less digits than its factorization.

128303451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 128303451 is about 11327.1113263709. Note that the first 3 decimals coincide. The cubic root of 128303451 is about 504.3663601382.

The spelling of 128303451 in words is "one hundred twenty-eight million, three hundred three thousand, four hundred fifty-one".