78234384 has 40 divisors (see below), whose sum is σ = 202974112. Its totient is φ = 25966080.

The previous prime is 78234383. The next prime is 78234397. The reversal of 78234384 is 48343287.

It is a super-2 number, since 2×78234384² = 12241237679718912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78234383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8187 + ... + 14949.

Almost surely, 2^78234384 is an apocalyptic number.

It is an amenable number.

78234384 is an abundant number, since it is smaller than the sum of its proper divisors (124739728).

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

78234384 is a wasteful number, since it uses less digits than its factorization.

78234384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015 (or 7009 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 78234384 is about 8845.0202939281. The cubic root of 78234384 is about 427.6934072371.

The spelling of 78234384 in words is "seventy-eight million, two hundred thirty-four thousand, three hundred eighty-four".