378001820 has 48 divisors (see below), whose sum is σ = 928316928. Its totient is φ = 126584640.

The previous prime is 378001787. The next prime is 378001843. The reversal of 378001820 is 28100873.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25376 + ... + 37415.

It is an arithmetic number, because the mean of its divisors is an integer number (19339936).

Almost surely, 2^378001820 is an apocalyptic number.

It is an amenable number.

378001820 is an abundant number, since it is smaller than the sum of its proper divisors (550315108).

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

378001820 is a wasteful number, since it uses less digits than its factorization.

378001820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62850 (or 62848 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 378001820 is about 19442.2689005167. The cubic root of 378001820 is about 723.0438396896.

The spelling of 378001820 in words is "three hundred seventy-eight million, one thousand, eight hundred twenty".