128616632 has 16 divisors (see below), whose sum is σ = 243545400. Its totient is φ = 63671200.

The previous prime is 128616619. The next prime is 128616641. The reversal of 128616632 is 236616821.

It is a super-3 number, since 3×128616632³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128616592 and 128616601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78782 + ... + 80397.

Almost surely, 2^128616632 is an apocalyptic number.

It is an amenable number.

128616632 is a deficient number, since it is larger than the sum of its proper divisors (114928768).

128616632 is a wasteful number, since it uses less digits than its factorization.

128616632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159286 (or 159282 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 128616632 is about 11340.9272989469. The cubic root of 128616632 is about 504.7764026633.

The spelling of 128616632 in words is "one hundred twenty-eight million, six hundred sixteen thousand, six hundred thirty-two".