384721456 has 40 divisors (see below), whose sum is σ = 853437440. Its totient is φ = 164579904.

The previous prime is 384721451. The next prime is 384721471. The reversal of 384721456 is 654127483.

It is not an unprimeable number, because it can be changed into a prime (384721451) 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, 65155 + ... + 70813.

It is an arithmetic number, because the mean of its divisors is an integer number (21335936).

Almost surely, 2^384721456 is an apocalyptic number.

It is an amenable number.

384721456 is an abundant number, since it is smaller than the sum of its proper divisors (468715984).

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

384721456 is a wasteful number, since it uses less digits than its factorization.

384721456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6281 (or 6275 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 384721456 is about 19614.3176276923. The cubic root of 384721456 is about 727.3031511591.

The spelling of 384721456 in words is "three hundred eighty-four million, seven hundred twenty-one thousand, four hundred fifty-six".