128887603 has 4 divisors (see below), whose sum is σ = 138802048. Its totient is φ = 118973160.

The previous prime is 128887579. The next prime is 128887609. The reversal of 128887603 is 306788821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306788821 = 3499 ⋅87679.

It is a cyclic number.

It is not a de Polignac number, because 128887603 - 2⁹ = 128887091 is a prime.

It is a super-2 number, since 2×128887603² = 33224028414171218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128887603.

It is not an unprimeable number, because it can be changed into a prime (128887609) 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 3 ways as a sum of consecutive naturals, for example, 4957203 + ... + 4957228.

It is an arithmetic number, because the mean of its divisors is an integer number (34700512).

Almost surely, 2^128887603 is an apocalyptic number.

128887603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128887603 is a deficient number, since it is larger than the sum of its proper divisors (9914445).

128887603 is an equidigital number, since it uses as much as digits as its factorization.

128887603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9914444.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 128887603 is about 11352.8676113130. The cubic root of 128887603 is about 505.1306435841.

The spelling of 128887603 in words is "one hundred twenty-eight million, eight hundred eighty-seven thousand, six hundred three".