384256140 has 24 divisors (see below), whose sum is σ = 1075917360. Its totient is φ = 102468288.

The previous prime is 384256139. The next prime is 384256199. The reversal of 384256140 is 41652483.

It is a super-2 number, since 2×384256140² = 295305562255399200, which contains 22 as substring.

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, 3202075 + ... + 3202194.

It is an arithmetic number, because the mean of its divisors is an integer number (44829890).

Almost surely, 2^384256140 is an apocalyptic number.

384256140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

384256140 is an abundant number, since it is smaller than the sum of its proper divisors (691661220).

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

384256140 is a wasteful number, since it uses less digits than its factorization.

384256140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404281 (or 6404279 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 384256140 is about 19602.4523975956. The cubic root of 384256140 is about 727.0098113759.

The spelling of 384256140 in words is "three hundred eighty-four million, two hundred fifty-six thousand, one hundred forty".