384617970 has 96 divisors (see below), whose sum is σ = 1131399360. Its totient is φ = 93234240.

The previous prime is 384617953. The next prime is 384617971. The reversal of 384617970 is 79716483.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (384617971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19536 + ... + 33924.

It is an arithmetic number, because the mean of its divisors is an integer number (11785410).

Almost surely, 2^384617970 is an apocalyptic number.

384617970 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 384617970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565699680).

384617970 is an abundant number, since it is smaller than the sum of its proper divisors (746781390).

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

384617970 is a wasteful number, since it uses less digits than its factorization.

384617970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14422 (or 14410 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 384617970 is about 19611.6794283407. The cubic root of 384617970 is about 727.2379330276.

The spelling of 384617970 in words is "three hundred eighty-four million, six hundred seventeen thousand, nine hundred seventy".