384679830 has 128 divisors (see below), whose sum is σ = 1002544128. Its totient is φ = 94228992.

The previous prime is 384679783. The next prime is 384679831. The reversal of 384679830 is 38976483.

It is a self number, because there is not a number n which added to its sum of digits gives 384679830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384679831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2450112 + ... + 2450268.

It is an arithmetic number, because the mean of its divisors is an integer number (7832376).

Almost surely, 2^384679830 is an apocalyptic number.

384679830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 384679830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501272064).

384679830 is an abundant number, since it is smaller than the sum of its proper divisors (617864298).

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

384679830 is a wasteful number, since it uses less digits than its factorization.

384679830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 384679830 is about 19613.2564863666. The cubic root of 384679830 is about 727.2769193556.

The spelling of 384679830 in words is "three hundred eighty-four million, six hundred seventy-nine thousand, eight hundred thirty".