128277412 has 6 divisors (see below), whose sum is σ = 224485478. Its totient is φ = 64138704.

The previous prime is 128277407. The next prime is 128277421. The reversal of 128277412 is 214772821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105390756 + 22886656 = 10266^2 + 4784^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16034673 + ... + 16034680.

Almost surely, 2^128277412 is an apocalyptic number.

It is an amenable number.

128277412 is a deficient number, since it is larger than the sum of its proper divisors (96208066).

128277412 is a wasteful number, since it uses less digits than its factorization.

128277412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32069357 (or 32069355 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

The square root of 128277412 is about 11325.9618576084. The cubic root of 128277412 is about 504.3322376883.

The spelling of 128277412 in words is "one hundred twenty-eight million, two hundred seventy-seven thousand, four hundred twelve".