128302820 has 24 divisors (see below), whose sum is σ = 283617600. Its totient is φ = 48619872.

The previous prime is 128302819. The next prime is 128302843. The reversal of 128302820 is 28203821.

It is a super-2 number, since 2×128302820² = 32923227239904800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128302820.

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, 168440 + ... + 169199.

It is an arithmetic number, because the mean of its divisors is an integer number (11817400).

Almost surely, 2^128302820 is an apocalyptic number.

128302820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128302820 is an abundant number, since it is smaller than the sum of its proper divisors (155314780).

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

128302820 is a wasteful number, since it uses less digits than its factorization.

128302820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337667 (or 337665 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 128302820 is about 11327.0834728098. The cubic root of 128302820 is about 504.3655333075.

The spelling of 128302820 in words is "one hundred twenty-eight million, three hundred two thousand, eight hundred twenty".