378146920 has 32 divisors (see below), whose sum is σ = 851449320. Its totient is φ = 151148800.

The previous prime is 378146917. The next prime is 378146927. The reversal of 378146920 is 29641873.

It can be written as a sum of positive squares in 4 ways, for example, as 245298244 + 132848676 = 15662^2 + 11526^2 .

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

It is not an unprimeable number, because it can be changed into a prime (378146927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73554 + ... + 78526.

Almost surely, 2^378146920 is an apocalyptic number.

It is an amenable number.

378146920 is an abundant number, since it is smaller than the sum of its proper divisors (473302400).

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

378146920 is a wasteful number, since it uses less digits than its factorization.

378146920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885 (or 6881 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 378146920 is about 19446.0001028489. Note that the first 3 decimals coincide. The cubic root of 378146920 is about 723.1363438649.

The spelling of 378146920 in words is "three hundred seventy-eight million, one hundred forty-six thousand, nine hundred twenty".