128012396 has 12 divisors (see below), whose sum is σ = 228788448. Its totient is φ = 62644272.

The previous prime is 128012393. The next prime is 128012407. The reversal of 128012396 is 693210821.

It is not an unprimeable number, because it can be changed into a prime (128012393) 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, 340271 + ... + 340646.

It is an arithmetic number, because the mean of its divisors is an integer number (19065704).

Almost surely, 2^128012396 is an apocalyptic number.

It is an amenable number.

128012396 is a deficient number, since it is larger than the sum of its proper divisors (100776052).

128012396 is a wasteful number, since it uses less digits than its factorization.

128012396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680968 (or 680966 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 128012396 is about 11314.2563167006. The cubic root of 128012396 is about 503.9846881634.

The spelling of 128012396 in words is "one hundred twenty-eight million, twelve thousand, three hundred ninety-six".