128692244 has 24 divisors (see below), whose sum is σ = 251012160. Its totient is φ = 57373056.

The previous prime is 128692243. The next prime is 128692273. The reversal of 128692244 is 442296821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 128692198 and 128692207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128692243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48512 + ... + 51095.

It is an arithmetic number, because the mean of its divisors is an integer number (10458840).

Almost surely, 2^128692244 is an apocalyptic number.

It is an amenable number.

128692244 is a deficient number, since it is larger than the sum of its proper divisors (122319916).

128692244 is a wasteful number, since it uses less digits than its factorization.

128692244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99647 (or 99645 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 128692244 is about 11344.2603989859. The cubic root of 128692244 is about 504.8753003872.

The spelling of 128692244 in words is "one hundred twenty-eight million, six hundred ninety-two thousand, two hundred forty-four".