128474720 has 48 divisors (see below), whose sum is σ = 331118928. Its totient is φ = 46717440.

The previous prime is 128474719. The next prime is 128474737. The reversal of 128474720 is 27474821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34739 + ... + 38258.

It is an arithmetic number, because the mean of its divisors is an integer number (6898311).

Almost surely, 2^128474720 is an apocalyptic number.

128474720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128474720 is an abundant number, since it is smaller than the sum of its proper divisors (202644208).

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

128474720 is a wasteful number, since it uses less digits than its factorization.

128474720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73023 (or 73015 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 128474720 is about 11334.6689409087. The cubic root of 128474720 is about 504.5906822782.

The spelling of 128474720 in words is "one hundred twenty-eight million, four hundred seventy-four thousand, seven hundred twenty".