384474840 has 32 divisors (see below), whose sum is σ = 1153424880. Its totient is φ = 102526592.

The previous prime is 384474833. The next prime is 384474859. The reversal of 384474840 is 48474483.

It is a junction number, because it is equal to n+sod(n) for n = 384474792 and 384474801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601859 + ... + 1602098.

Almost surely, 2^384474840 is an apocalyptic number.

384474840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

384474840 is an abundant number, since it is smaller than the sum of its proper divisors (768950040).

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

384474840 is a wasteful number, since it uses less digits than its factorization.

384474840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203971 (or 3203967 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 42.

The square root of 384474840 is about 19608.0299877372. The cubic root of 384474840 is about 727.1477114849.

The spelling of 384474840 in words is "three hundred eighty-four million, four hundred seventy-four thousand, eight hundred forty".