128773340 has 24 divisors (see below), whose sum is σ = 279750240. Its totient is φ = 49732928.

The previous prime is 128773321. The next prime is 128773361. The reversal of 128773340 is 43377821.

It is a self number, because there is not a number n which added to its sum of digits gives 128773340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110432 + ... + 111591.

It is an arithmetic number, because the mean of its divisors is an integer number (11656260).

Almost surely, 2^128773340 is an apocalyptic number.

128773340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128773340 is an abundant number, since it is smaller than the sum of its proper divisors (150976900).

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

128773340 is a wasteful number, since it uses less digits than its factorization.

128773340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222061 (or 222059 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 128773340 is about 11347.8341545865. The cubic root of 128773340 is about 504.9813279375.

The spelling of 128773340 in words is "one hundred twenty-eight million, seven hundred seventy-three thousand, three hundred forty".