128038963 has 10 divisors (see below), whose sum is σ = 138739444. Its totient is φ = 118163448.

The previous prime is 128038957. The next prime is 128038969. The reversal of 128038963 is 369830821.

It is an interprime number because it is at equal distance from previous prime (128038957) and next prime (128038969).

It is not a de Polignac number, because 128038963 - 2⁵ = 128038931 is a prime.

It is a super-2 number, since 2×128038963² = 32787952092230738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128038969) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26320 + ... + 30802.

Almost surely, 2^128038963 is an apocalyptic number.

128038963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128038963 is a deficient number, since it is larger than the sum of its proper divisors (10700481).

128038963 is an frugal number, since it uses more digits than its factorization.

128038963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535 (or 4496 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 128038963 is about 11315.4303055606. The cubic root of 128038963 is about 504.0195505035.

The spelling of 128038963 in words is "one hundred twenty-eight million, thirty-eight thousand, nine hundred sixty-three".