128224250 has 64 divisors (see below), whose sum is σ = 299310336. Its totient is φ = 39960000.

The previous prime is 128224231. The next prime is 128224253. The reversal of 128224250 is 52422821.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128224253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15920 + ... + 22580.

It is an arithmetic number, because the mean of its divisors is an integer number (4676724).

Almost surely, 2^128224250 is an apocalyptic number.

128224250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128224250 is an abundant number, since it is smaller than the sum of its proper divisors (171086086).

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

128224250 is a wasteful number, since it uses less digits than its factorization.

128224250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696 (or 6686 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 128224250 is about 11323.6147055611. The cubic root of 128224250 is about 504.2625579355.

The spelling of 128224250 in words is "one hundred twenty-eight million, two hundred twenty-four thousand, two hundred fifty".