78051384 has 32 divisors (see below), whose sum is σ = 216810000. Its totient is φ = 26017056.

The previous prime is 78051377. The next prime is 78051401. The reversal of 78051384 is 48315087.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180459 + ... + 180890.

Almost surely, 2^78051384 is an apocalyptic number.

It is an amenable number.

78051384 is an abundant number, since it is smaller than the sum of its proper divisors (138758616).

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

78051384 is a wasteful number, since it uses less digits than its factorization.

78051384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361364 (or 361354 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 78051384 is about 8834.6694335442. The cubic root of 78051384 is about 427.3596707772.

The spelling of 78051384 in words is "seventy-eight million, fifty-one thousand, three hundred eighty-four".