128988046 has 16 divisors (see below), whose sum is σ = 215981568. Its totient is φ = 57267000.

The previous prime is 128988011. The next prime is 128988049. The reversal of 128988046 is 640889821.

It is a junction number, because it is equal to n+sod(n) for n = 128987987 and 128988005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128988049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67230 + ... + 69121.

It is an arithmetic number, because the mean of its divisors is an integer number (13498848).

Almost surely, 2^128988046 is an apocalyptic number.

128988046 is a deficient number, since it is larger than the sum of its proper divisors (86993522).

128988046 is a wasteful number, since it uses less digits than its factorization.

128988046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136407.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 128988046 is about 11357.2904339019. The cubic root of 128988046 is about 505.2618267802.

The spelling of 128988046 in words is "one hundred twenty-eight million, nine hundred eighty-eight thousand, forty-six".