128347250 has 32 divisors (see below), whose sum is σ = 242161920. Its totient is φ = 50934000.

The previous prime is 128347237. The next prime is 128347253. The reversal of 128347250 is 52743821.

It is not an unprimeable number, because it can be changed into a prime (128347253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30791 + ... + 34709.

It is an arithmetic number, because the mean of its divisors is an integer number (7567560).

Almost surely, 2^128347250 is an apocalyptic number.

128347250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128347250 is a deficient number, since it is larger than the sum of its proper divisors (113814670).

128347250 is a wasteful number, since it uses less digits than its factorization.

128347250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067 (or 4057 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 128347250 is about 11329.0445316452. The cubic root of 128347250 is about 504.4237455236.

The spelling of 128347250 in words is "one hundred twenty-eight million, three hundred forty-seven thousand, two hundred fifty".