128449296 has 60 divisors (see below), whose sum is σ = 375118848. Its totient is φ = 40953792.

The previous prime is 128449283. The next prime is 128449301. The reversal of 128449296 is 692944821.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16080 + ... + 22703.

Almost surely, 2^128449296 is an apocalyptic number.

128449296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128449296 is an abundant number, since it is smaller than the sum of its proper divisors (246669552).

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

128449296 is a wasteful number, since it uses less digits than its factorization.

128449296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38820 (or 38811 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 128449296 is about 11333.5473705279. The cubic root of 128449296 is about 504.5573954188.

The spelling of 128449296 in words is "one hundred twenty-eight million, four hundred forty-nine thousand, two hundred ninety-six".