378927640 has 128 divisors (see below), whose sum is σ = 1104768000. Its totient is φ = 113591808.

The previous prime is 378927631. The next prime is 378927643. The reversal of 378927640 is 46729873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378927643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66421 + ... + 71899.

It is an arithmetic number, because the mean of its divisors is an integer number (8631000).

Almost surely, 2^378927640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378927640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552384000).

378927640 is an abundant number, since it is smaller than the sum of its proper divisors (725840360).

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

378927640 is a wasteful number, since it uses less digits than its factorization.

378927640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5529 (or 5525 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 378927640 is about 19466.0638034504. The cubic root of 378927640 is about 723.6336628413.

The spelling of 378927640 in words is "three hundred seventy-eight million, nine hundred twenty-seven thousand, six hundred forty".