128487472 has 40 divisors (see below), whose sum is σ = 258501312. Its totient is φ = 61824000.

The previous prime is 128487451. The next prime is 128487497. The reversal of 128487472 is 274784821.

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, 44472 + ... + 47272.

Almost surely, 2^128487472 is an apocalyptic number.

It is an amenable number.

128487472 is an abundant number, since it is smaller than the sum of its proper divisors (130013840).

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

128487472 is a wasteful number, since it uses less digits than its factorization.

128487472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917 (or 2911 counting only the distinct ones).

The product of its digits is 200704, while the sum is 43.

The square root of 128487472 is about 11335.2314488942. The cubic root of 128487472 is about 504.6073764249.

The spelling of 128487472 in words is "one hundred twenty-eight million, four hundred eighty-seven thousand, four hundred seventy-two".