128373228 has 48 divisors (see below), whose sum is σ = 333564000. Its totient is φ = 42695424.

The previous prime is 128373221. The next prime is 128373257. The reversal of 128373228 is 822373821.

It is a happy number.

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 = 128373192 and 128373201.

It is not an unprimeable number, because it can be changed into a prime (128373221) 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, 60408 + ... + 62496.

It is an arithmetic number, because the mean of its divisors is an integer number (6949250).

Almost surely, 2^128373228 is an apocalyptic number.

128373228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128373228 is an abundant number, since it is smaller than the sum of its proper divisors (205190772).

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

128373228 is a wasteful number, since it uses less digits than its factorization.

128373228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671 (or 2663 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 128373228 is about 11330.1909957423. The cubic root of 128373228 is about 504.4577756932.

The spelling of 128373228 in words is "one hundred twenty-eight million, three hundred seventy-three thousand, two hundred twenty-eight".