128002800 has 60 divisors (see below), whose sum is σ = 410039480. Its totient is φ = 34133760.

The previous prime is 128002793. The next prime is 128002807. The reversal of 128002800 is 8200821.

It is an interprime number because it is at equal distance from previous prime (128002793) and next prime (128002807).

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128002807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52135 + ... + 54534.

Almost surely, 2^128002800 is an apocalyptic number.

128002800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128002800 is an abundant number, since it is smaller than the sum of its proper divisors (282036680).

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

128002800 is a wasteful number, since it uses less digits than its factorization.

128002800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106690 (or 106679 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 128002800 is about 11313.8322419948. The cubic root of 128002800 is about 503.9720947009.

The spelling of 128002800 in words is "one hundred twenty-eight million, two thousand, eight hundred".