128532382 has 32 divisors (see below), whose sum is σ = 213995520. Its totient is φ = 57415680.

The previous prime is 128532311. The next prime is 128532407. The reversal of 128532382 is 283235821.

Its product of digits (23040) is a multiple of the sum of its prime divisors (576).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499998 + ... + 500254.

It is an arithmetic number, because the mean of its divisors is an integer number (6687360).

Almost surely, 2^128532382 is an apocalyptic number.

128532382 is a deficient number, since it is larger than the sum of its proper divisors (85463138).

128532382 is a wasteful number, since it uses less digits than its factorization.

128532382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its digits is 23040, while the sum is 34.

The square root of 128532382 is about 11337.2122675727. The cubic root of 128532382 is about 504.6661610860. Note that the first 3 decimals are identical.

The spelling of 128532382 in words is "one hundred twenty-eight million, five hundred thirty-two thousand, three hundred eighty-two".