128369484 has 18 divisors (see below), whose sum is σ = 324489620. Its totient is φ = 42789816.

The previous prime is 128369459. The next prime is 128369497. The reversal of 128369484 is 484963821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1782874 + ... + 1782945.

Almost surely, 2^128369484 is an apocalyptic number.

It is an amenable number.

128369484 is an abundant number, since it is smaller than the sum of its proper divisors (196120136).

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

128369484 is a wasteful number, since it uses less digits than its factorization.

128369484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565829 (or 3565824 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 128369484 is about 11330.0257722567. The cubic root of 128369484 is about 504.4528714820.

The spelling of 128369484 in words is "one hundred twenty-eight million, three hundred sixty-nine thousand, four hundred eighty-four".