128806224 has 20 divisors (see below), whose sum is σ = 332749536. Its totient is φ = 42935392.

The previous prime is 128806219. The next prime is 128806231. The reversal of 128806224 is 422608821.

It is a happy number.

It is a super-2 number, since 2×128806224² = 33182086682276352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341684 + ... + 1341779.

Almost surely, 2^128806224 is an apocalyptic number.

It is an amenable number.

128806224 is an abundant number, since it is smaller than the sum of its proper divisors (203943312).

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

128806224 is a wasteful number, since it uses less digits than its factorization.

128806224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683474 (or 2683468 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 128806224 is about 11349.2829729459. The cubic root of 128806224 is about 505.0243088648.

The spelling of 128806224 in words is "one hundred twenty-eight million, eight hundred six thousand, two hundred twenty-four".