128654740 has 36 divisors (see below), whose sum is σ = 274458996. Its totient is φ = 50658432.

The previous prime is 128654711. The next prime is 128654741. The reversal of 128654740 is 47456821.

It can be written as a sum of positive squares in 2 ways, for example, as 78216336 + 50438404 = 8844^2 + 7102^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128654740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128654741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89064 + ... + 90496.

It is an arithmetic number, because the mean of its divisors is an integer number (7623861).

Almost surely, 2^128654740 is an apocalyptic number.

128654740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128654740 is an abundant number, since it is smaller than the sum of its proper divisors (145804256).

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

128654740 is a wasteful number, since it uses less digits than its factorization.

128654740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 128654740 is about 11342.6072840419. The cubic root of 128654740 is about 504.8262513734.

The spelling of 128654740 in words is "one hundred twenty-eight million, six hundred fifty-four thousand, seven hundred forty".