378820408 has 8 divisors (see below), whose sum is σ = 710288280. Its totient is φ = 189410200.

The previous prime is 378820399. The next prime is 378820427. The reversal of 378820408 is 804028873.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23676268 + ... + 23676283.

It is an arithmetic number, because the mean of its divisors is an integer number (88786035).

Almost surely, 2^378820408 is an apocalyptic number.

It is an amenable number.

378820408 is a deficient number, since it is larger than the sum of its proper divisors (331467872).

378820408 is a wasteful number, since it uses less digits than its factorization.

378820408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47352557 (or 47352553 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 378820408 is about 19463.3092766878. The cubic root of 378820408 is about 723.5653965044.

The spelling of 378820408 in words is "three hundred seventy-eight million, eight hundred twenty thousand, four hundred eight".