128513832 has 16 divisors (see below), whose sum is σ = 321284640. Its totient is φ = 42837936.

The previous prime is 128513831. The next prime is 128513837. The reversal of 128513832 is 238315821.

It is a junction number, because it is equal to n+sod(n) for n = 128513793 and 128513802.

It is not an unprimeable number, because it can be changed into a prime (128513831) 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, 2677348 + ... + 2677395.

It is an arithmetic number, because the mean of its divisors is an integer number (20080290).

Almost surely, 2^128513832 is an apocalyptic number.

128513832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128513832 is an abundant number, since it is smaller than the sum of its proper divisors (192770808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128513832 is a wasteful number, since it uses less digits than its factorization.

128513832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5354752 (or 5354748 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 128513832 is about 11336.3941357029. The cubic root of 128513832 is about 504.6418818407.

The spelling of 128513832 in words is "one hundred twenty-eight million, five hundred thirteen thousand, eight hundred thirty-two".