384072218 has 8 divisors (see below), whose sum is σ = 576306900. Its totient is φ = 191969920.

The previous prime is 384072217. The next prime is 384072223. The reversal of 384072218 is 812270483.

It can be written as a sum of positive squares in 2 ways, for example, as 370062169 + 14010049 = 19237^2 + 3743^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×384072218² = 295022937278879048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (384072217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25493 + ... + 37656.

Almost surely, 2^384072218 is an apocalyptic number.

384072218 is a deficient number, since it is larger than the sum of its proper divisors (192234682).

384072218 is a wasteful number, since it uses less digits than its factorization.

384072218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66192.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 384072218 is about 19597.7605353265. The cubic root of 384072218 is about 726.8937998374.

The spelling of 384072218 in words is "three hundred eighty-four million, seventy-two thousand, two hundred eighteen".