128546380 has 24 divisors (see below), whose sum is σ = 270179280. Its totient is φ = 51374400.

The previous prime is 128546377. The next prime is 128546443. The reversal of 128546380 is 83645821.

It is a happy number.

It is a super-2 number, since 2×128546380² = 33048343622208800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31455 + ... + 35305.

It is an arithmetic number, because the mean of its divisors is an integer number (11257470).

Almost surely, 2^128546380 is an apocalyptic number.

128546380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128546380 is an abundant number, since it is smaller than the sum of its proper divisors (141632900).

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

128546380 is a wasteful number, since it uses less digits than its factorization.

128546380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5529 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 128546380 is about 11337.8295982961. The cubic root of 128546380 is about 504.6844808805.

The spelling of 128546380 in words is "one hundred twenty-eight million, five hundred forty-six thousand, three hundred eighty".