128932372 has 12 divisors (see below), whose sum is σ = 231135156. Its totient is φ = 62893760.

The previous prime is 128932367. The next prime is 128932393. The reversal of 128932372 is 273239821.

It can be written as a sum of positive squares in 2 ways, for example, as 43480836 + 85451536 = 6594^2 + 9244^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392923 + ... + 393250.

It is an arithmetic number, because the mean of its divisors is an integer number (19261263).

Almost surely, 2^128932372 is an apocalyptic number.

It is an amenable number.

128932372 is a deficient number, since it is larger than the sum of its proper divisors (102202784).

128932372 is a wasteful number, since it uses less digits than its factorization.

128932372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786218 (or 786216 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 128932372 is about 11354.8391446114. The cubic root of 128932372 is about 505.1891223812.

The spelling of 128932372 in words is "one hundred twenty-eight million, nine hundred thirty-two thousand, three hundred seventy-two".