78384168 has 24 divisors (see below), whose sum is σ = 212290650. Its totient is φ = 26128032.

The previous prime is 78384149. The next prime is 78384193. The reversal of 78384168 is 86148387.

It can be written as a sum of positive squares in only one way, i.e., 57426084 + 20958084 = 7578^2 + 4578^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×78384168² = 12288155586104448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 544263 + ... + 544406.

Almost surely, 2^78384168 is an apocalyptic number.

It is an amenable number.

78384168 is an abundant number, since it is smaller than the sum of its proper divisors (133906482).

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

78384168 is a wasteful number, since it uses less digits than its factorization.

78384168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088681 (or 1088674 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 78384168 is about 8853.4833822626. The cubic root of 78384168 is about 427.9661806917.

The spelling of 78384168 in words is "seventy-eight million, three hundred eighty-four thousand, one hundred sixty-eight".