384732220 has 12 divisors (see below), whose sum is σ = 807937704. Its totient is φ = 153892880.

The previous prime is 384732209. The next prime is 384732239. The reversal of 384732220 is 22237483.

It is a super-2 number, since 2×384732220² = 296037762212256800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9618286 + ... + 9618325.

It is an arithmetic number, because the mean of its divisors is an integer number (67328142).

Almost surely, 2^384732220 is an apocalyptic number.

It is an amenable number.

384732220 is an abundant number, since it is smaller than the sum of its proper divisors (423205484).

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

384732220 is a wasteful number, since it uses less digits than its factorization.

384732220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19236620 (or 19236618 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 384732220 is about 19614.5920171693. The cubic root of 384732220 is about 727.3099340908.

The spelling of 384732220 in words is "three hundred eighty-four million, seven hundred thirty-two thousand, two hundred twenty".