128881022 has 8 divisors (see below), whose sum is σ = 193455000. Its totient is φ = 64396024.

The previous prime is 128881013. The next prime is 128881037. The reversal of 128881022 is 220188821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128881022² = 33220635663528968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128881022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18497 + ... + 24492.

It is an arithmetic number, because the mean of its divisors is an integer number (24181875).

Almost surely, 2^128881022 is an apocalyptic number.

128881022 is a deficient number, since it is larger than the sum of its proper divisors (64573978).

128881022 is a wasteful number, since it uses less digits than its factorization.

128881022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44490.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 128881022 is about 11352.5777689475. The cubic root of 128881022 is about 505.1220461156.

The spelling of 128881022 in words is "one hundred twenty-eight million, eight hundred eighty-one thousand, twenty-two".