384334780 has 48 divisors (see below), whose sum is σ = 830581920. Its totient is φ = 149326848.

The previous prime is 384334739. The next prime is 384334789. The reversal of 384334780 is 87433483.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384334789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95856 + ... + 99784.

It is an arithmetic number, because the mean of its divisors is an integer number (17303790).

Almost surely, 2^384334780 is an apocalyptic number.

It is an amenable number.

384334780 is an abundant number, since it is smaller than the sum of its proper divisors (446247140).

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

384334780 is a wasteful number, since it uses less digits than its factorization.

384334780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078 (or 4076 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 384334780 is about 19604.4581664478. The cubic root of 384334780 is about 727.0594034282.

The spelling of 384334780 in words is "three hundred eighty-four million, three hundred thirty-four thousand, seven hundred eighty".