378438520 has 32 divisors (see below), whose sum is σ = 863485920. Its totient is φ = 149242240.

The previous prime is 378438503. The next prime is 378438539. The reversal of 378438520 is 25834873.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 63787 + ... + 69466.

It is an arithmetic number, because the mean of its divisors is an integer number (26983935).

Almost surely, 2^378438520 is an apocalyptic number.

It is an amenable number.

378438520 is an abundant number, since it is smaller than the sum of its proper divisors (485047400).

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

378438520 is a wasteful number, since it uses less digits than its factorization.

378438520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133335 (or 133331 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 378438520 is about 19453.4963438452. The cubic root of 378438520 is about 723.3221732064.

The spelling of 378438520 in words is "three hundred seventy-eight million, four hundred thirty-eight thousand, five hundred twenty".