320129976 has 16 divisors (see below), whose sum is σ = 800325000. Its totient is φ = 106709984.

The previous prime is 320129959. The next prime is 320129977. The reversal of 320129976 is 679921023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320129977) 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, 6669351 + ... + 6669398.

Almost surely, 2^320129976 is an apocalyptic number.

It is an amenable number.

320129976 is an abundant number, since it is smaller than the sum of its proper divisors (480195024).

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

320129976 is a wasteful number, since it uses less digits than its factorization.

320129976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13338758 (or 13338754 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 320129976 is about 17892.1763908139. The cubic root of 320129976 is about 684.0829727327.

The spelling of 320129976 in words is "three hundred twenty million, one hundred twenty-nine thousand, nine hundred seventy-six".