384771420 has 144 divisors (see below), whose sum is σ = 1317345120. Its totient is φ = 90048000.

The previous prime is 384771403. The next prime is 384771427. The reversal of 384771420 is 24177483.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384771427) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 54070 + ... + 60770.

It is an arithmetic number, because the mean of its divisors is an integer number (9148230).

Almost surely, 2^384771420 is an apocalyptic number.

384771420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 384771420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658672560).

384771420 is an abundant number, since it is smaller than the sum of its proper divisors (932573700).

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

384771420 is a wasteful number, since it uses less digits than its factorization.

384771420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756 (or 6751 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 384771420 is about 19615.5912477804. The cubic root of 384771420 is about 727.3346348911.

The spelling of 384771420 in words is "three hundred eighty-four million, seven hundred seventy-one thousand, four hundred twenty".