128199572 has 12 divisors (see below), whose sum is σ = 224697396. Its totient is φ = 64000320.

The previous prime is 128199571. The next prime is 128199583. The reversal of 128199572 is 275991821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46730896 + 81468676 = 6836^2 + 9026^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128199571) 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 3 ways as a sum of consecutive naturals, for example, 21929 + ... + 27152.

It is an arithmetic number, because the mean of its divisors is an integer number (18724783).

Almost surely, 2^128199572 is an apocalyptic number.

It is an amenable number.

128199572 is a deficient number, since it is larger than the sum of its proper divisors (96497824).

128199572 is a wasteful number, since it uses less digits than its factorization.

128199572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49738 (or 49736 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 128199572 is about 11322.5249834125. The cubic root of 128199572 is about 504.2302057873.

The spelling of 128199572 in words is "one hundred twenty-eight million, one hundred ninety-nine thousand, five hundred seventy-two".