378446220 has 36 divisors (see below), whose sum is σ = 1147954080. Its totient is φ = 100918944.

The previous prime is 378446207. The next prime is 378446221. The reversal of 378446220 is 22644873.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (378446221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1051060 + ... + 1051419.

Almost surely, 2^378446220 is an apocalyptic number.

378446220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

378446220 is an abundant number, since it is smaller than the sum of its proper divisors (769507860).

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

378446220 is a wasteful number, since it uses less digits than its factorization.

378446220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102494 (or 2102489 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 378446220 is about 19453.6942507072. The cubic root of 378446220 is about 723.3270789287.

The spelling of 378446220 in words is "three hundred seventy-eight million, four hundred forty-six thousand, two hundred twenty".