208128932 has 24 divisors (see below), whose sum is σ = 414614592. Its totient is φ = 90490400.

The previous prime is 208128919. The next prime is 208128953. The reversal of 208128932 is 239821802.

It is a junction number, because it is equal to n+sod(n) for n = 208128892 and 208128901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101819 + ... + 103842.

It is an arithmetic number, because the mean of its divisors is an integer number (17275608).

Almost surely, 2^208128932 is an apocalyptic number.

208128932 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

208128932 is a deficient number, since it is larger than the sum of its proper divisors (206485660).

208128932 is a wasteful number, since it uses less digits than its factorization.

208128932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205699 (or 205697 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 208128932 is about 14426.6743222407. The cubic root of 208128932 is about 592.6216116459.

It can be divided in two parts, 2081 and 28932, that added together give a palindrome (31013).

The spelling of 208128932 in words is "two hundred eight million, one hundred twenty-eight thousand, nine hundred thirty-two".