80128400 has 60 divisors (see below), whose sum is σ = 210020784. Its totient is φ = 29136000.

The previous prime is 80128387. The next prime is 80128427. The reversal of 80128400 is 482108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4706 + ... + 13505.

Almost surely, 2^80128400 is an apocalyptic number.

80128400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80128400 is an abundant number, since it is smaller than the sum of its proper divisors (129892384).

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

80128400 is a wasteful number, since it uses less digits than its factorization.

80128400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18240 (or 18229 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 80128400 is about 8951.4468104324. The cubic root of 80128400 is about 431.1173392974.

The spelling of 80128400 in words is "eighty million, one hundred twenty-eight thousand, four hundred".