128374128 has 30 divisors (see below), whose sum is σ = 359269664. Its totient is φ = 42791328.

The previous prime is 128374117. The next prime is 128374139. The reversal of 128374128 is 821473821.

It is an interprime number because it is at equal distance from previous prime (128374117) and next prime (128374139).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 128374092 and 128374101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445600 + ... + 445887.

Almost surely, 2^128374128 is an apocalyptic number.

128374128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128374128 is an abundant number, since it is smaller than the sum of its proper divisors (230895536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128374128 is a wasteful number, since it uses less digits than its factorization.

128374128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891501 (or 891492 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 128374128 is about 11330.2307125672. The cubic root of 128374128 is about 504.4589545760.

The spelling of 128374128 in words is "one hundred twenty-eight million, three hundred seventy-four thousand, one hundred twenty-eight".