378189920 has 48 divisors (see below), whose sum is σ = 932329440. Its totient is φ = 144697344.

The previous prime is 378189883. The next prime is 378189953. The reversal of 378189920 is 29981873.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47705 + ... + 55064.

It is an arithmetic number, because the mean of its divisors is an integer number (19423530).

Almost surely, 2^378189920 is an apocalyptic number.

It is an amenable number.

378189920 is an abundant number, since it is smaller than the sum of its proper divisors (554139520).

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

378189920 is a wasteful number, since it uses less digits than its factorization.

378189920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102807 (or 102799 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 378189920 is about 19447.1056972497. The cubic root of 378189920 is about 723.1637526864.

The spelling of 378189920 in words is "three hundred seventy-eight million, one hundred eighty-nine thousand, nine hundred twenty".