128860272 has 60 divisors (see below), whose sum is σ = 381850560. Its totient is φ = 40425984.

The previous prime is 128860267. The next prime is 128860301. The reversal of 128860272 is 272068821.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23872 + ... + 28767.

It is an arithmetic number, because the mean of its divisors is an integer number (6364176).

Almost surely, 2^128860272 is an apocalyptic number.

128860272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128860272 is an abundant number, since it is smaller than the sum of its proper divisors (252990288).

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

128860272 is a wasteful number, since it uses less digits than its factorization.

128860272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52670 (or 52661 counting only the distinct ones).

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

The square root of 128860272 is about 11351.6638428030. The cubic root of 128860272 is about 505.0949362410.

The spelling of 128860272 in words is "one hundred twenty-eight million, eight hundred sixty thousand, two hundred seventy-two".