128788022 has 16 divisors (see below), whose sum is σ = 223141392. Its totient is φ = 55096320.

The previous prime is 128787983. The next prime is 128788031. The reversal of 128788022 is 220887821.

It is a super-2 number, since 2×128788022² = 33172709221344968, 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, 171803 + ... + 172550.

It is an arithmetic number, because the mean of its divisors is an integer number (13946337).

Almost surely, 2^128788022 is an apocalyptic number.

128788022 is a deficient number, since it is larger than the sum of its proper divisors (94353370).

128788022 is a wasteful number, since it uses less digits than its factorization.

128788022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344383.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 128788022 is about 11348.4810437344. The cubic root of 128788022 is about 505.0005189028. Note that the first 3 decimals are identical.

The spelling of 128788022 in words is "one hundred twenty-eight million, seven hundred eighty-eight thousand, twenty-two".