128768476 has 6 divisors (see below), whose sum is σ = 225344840. Its totient is φ = 64384236.

The previous prime is 128768461. The next prime is 128768477. The reversal of 128768476 is 674867821.

It is a happy number.

It is a super-2 number, since 2×128768476² = 33162640822725152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128768477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16096056 + ... + 16096063.

Almost surely, 2^128768476 is an apocalyptic number.

It is an amenable number.

128768476 is a deficient number, since it is larger than the sum of its proper divisors (96576364).

128768476 is a wasteful number, since it uses less digits than its factorization.

128768476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32192123 (or 32192121 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 128768476 is about 11347.6198385388. The cubic root of 128768476 is about 504.9749698407.

The spelling of 128768476 in words is "one hundred twenty-eight million, seven hundred sixty-eight thousand, four hundred seventy-six".