378739680 has 144 divisors (see below), whose sum is σ = 1311548112. Its totient is φ = 91801600.

The previous prime is 378739663. The next prime is 378739693. The reversal of 378739680 is 86937873.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54820 + ... + 61340.

It is an arithmetic number, because the mean of its divisors is an integer number (9107973).

Almost surely, 2^378739680 is an apocalyptic number.

378739680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378739680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655774056).

378739680 is an abundant number, since it is smaller than the sum of its proper divisors (932808432).

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

378739680 is a wasteful number, since it uses less digits than its factorization.

378739680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561 (or 6542 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 378739680 is about 19461.2353153647. The cubic root of 378739680 is about 723.5139947180.

The spelling of 378739680 in words is "three hundred seventy-eight million, seven hundred thirty-nine thousand, six hundred eighty".