128806552 has 32 divisors (see below), whose sum is σ = 292252320. Its totient is φ = 51955200.

The previous prime is 128806549. The next prime is 128806597. The reversal of 128806552 is 255608821.

It is a super-2 number, since 2×128806552² = 33182255676257408, 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 7 ways as a sum of consecutive naturals, for example, 66699 + ... + 68602.

It is an arithmetic number, because the mean of its divisors is an integer number (9132885).

Almost surely, 2^128806552 is an apocalyptic number.

It is an amenable number.

128806552 is an abundant number, since it is smaller than the sum of its proper divisors (163445768).

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

128806552 is a wasteful number, since it uses less digits than its factorization.

128806552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135331 (or 135327 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 128806552 is about 11349.2974231888. The cubic root of 128806552 is about 505.0247375393.

The spelling of 128806552 in words is "one hundred twenty-eight million, eight hundred six thousand, five hundred fifty-two".