128266340 has 24 divisors (see below), whose sum is σ = 283536960. Its totient is φ = 48606048.

The previous prime is 128266297. The next prime is 128266349. The reversal of 128266340 is 43662821.

It is a junction number, because it is equal to n+sod(n) for n = 128266297 and 128266306.

It is not an unprimeable number, because it can be changed into a prime (128266349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168392 + ... + 169151.

It is an arithmetic number, because the mean of its divisors is an integer number (11814040).

Almost surely, 2^128266340 is an apocalyptic number.

128266340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128266340 is an abundant number, since it is smaller than the sum of its proper divisors (155270620).

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

128266340 is a wasteful number, since it uses less digits than its factorization.

128266340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337571 (or 337569 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 128266340 is about 11325.4730585526. The cubic root of 128266340 is about 504.3177271389.

The spelling of 128266340 in words is "one hundred twenty-eight million, two hundred sixty-six thousand, three hundred forty".