128149396 has 12 divisors (see below), whose sum is σ = 225090880. Its totient is φ = 63837720.

The previous prime is 128149393. The next prime is 128149423. The reversal of 128149396 is 693941821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128149393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58026 + ... + 60193.

Almost surely, 2^128149396 is an apocalyptic number.

It is an amenable number.

128149396 is a deficient number, since it is larger than the sum of its proper divisors (96941484).

128149396 is a wasteful number, since it uses less digits than its factorization.

128149396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118494 (or 118492 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 128149396 is about 11320.3090063832. The cubic root of 128149396 is about 504.1644136897.

The spelling of 128149396 in words is "one hundred twenty-eight million, one hundred forty-nine thousand, three hundred ninety-six".