378222660 has 36 divisors (see below), whose sum is σ = 1147275948. Its totient is φ = 100859328.

The previous prime is 378222659. The next prime is 378222673. The reversal of 378222660 is 66222873.

378222660 is a `hidden beast` number, since 378 + 2 + 226 + 60 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55086084 + 323136576 = 7422^2 + 17976^2 .

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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1050439 + ... + 1050798.

Almost surely, 2^378222660 is an apocalyptic number.

378222660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

378222660 is an abundant number, since it is smaller than the sum of its proper divisors (769053288).

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

378222660 is a wasteful number, since it uses less digits than its factorization.

378222660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101252 (or 2101247 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 378222660 is about 19447.9474495382. The cubic root of 378222660 is about 723.1846202424.

The spelling of 378222660 in words is "three hundred seventy-eight million, two hundred twenty-two thousand, six hundred sixty".