128253332 has 6 divisors (see below), whose sum is σ = 224443338. Its totient is φ = 64126664.

The previous prime is 128253329. The next prime is 128253379. The reversal of 128253332 is 233352821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 127554436 + 698896 = 11294^2 + 836^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128253295 and 128253304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16031663 + ... + 16031670.

It is an arithmetic number, because the mean of its divisors is an integer number (37407223).

Almost surely, 2^128253332 is an apocalyptic number.

It is an amenable number.

128253332 is a deficient number, since it is larger than the sum of its proper divisors (96190006).

128253332 is a wasteful number, since it uses less digits than its factorization.

128253332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32063337 (or 32063335 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 128253332 is about 11324.8987633444. The cubic root of 128253332 is about 504.3006782733.

The spelling of 128253332 in words is "one hundred twenty-eight million, two hundred fifty-three thousand, three hundred thirty-two".