128895750 has 48 divisors (see below), whose sum is σ = 348540192. Its totient is φ = 34371600.

The previous prime is 128895733. The next prime is 128895757. The reversal of 128895750 is 57598821.

It is a happy number.

It is a super-2 number, since 2×128895750² = 33228228736125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 128895696 and 128895705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128895757) 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, 26394 + ... + 30893.

It is an arithmetic number, because the mean of its divisors is an integer number (7261254).

Almost surely, 2^128895750 is an apocalyptic number.

128895750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128895750 is an abundant number, since it is smaller than the sum of its proper divisors (219644442).

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

128895750 is a wasteful number, since it uses less digits than its factorization.

128895750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57310 (or 57297 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The square root of 128895750 is about 11353.2264136676. The cubic root of 128895750 is about 505.1412864816.

The spelling of 128895750 in words is "one hundred twenty-eight million, eight hundred ninety-five thousand, seven hundred fifty".