381296172 has 24 divisors (see below), whose sum is σ = 890040816. Its totient is φ = 127048768.

The previous prime is 381296171. The next prime is 381296183. The reversal of 381296172 is 271692183.

381296172 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

381296172 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 381296172.

It is not an unprimeable number, because it can be changed into a prime (381296171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38218 + ... + 47150.

It is an arithmetic number, because the mean of its divisors is an integer number (37085034).

Almost surely, 2^381296172 is an apocalyptic number.

It is an amenable number.

381296172 is an abundant number, since it is smaller than the sum of its proper divisors (508744644).

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

381296172 is a wasteful number, since it uses less digits than its factorization.

381296172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12497 (or 12495 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 381296172 is about 19526.8064977354. The cubic root of 381296172 is about 725.1382515580.

The spelling of 381296172 in words is "three hundred eighty-one million, two hundred ninety-six thousand, one hundred seventy-two".