378564870 has 32 divisors (see below), whose sum is σ = 937866240. Its totient is φ = 97693920.

The previous prime is 378564821. The next prime is 378564877. The reversal of 378564870 is 78465873.

It is a super-2 number, since 2×378564870² = 286622721596233800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378564877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202600 + ... + 204459.

It is an arithmetic number, because the mean of its divisors is an integer number (29308320).

Almost surely, 2^378564870 is an apocalyptic number.

378564870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

378564870 is an abundant number, since it is smaller than the sum of its proper divisors (559301370).

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

378564870 is a wasteful number, since it uses less digits than its factorization.

378564870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407100.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 378564870 is about 19456.7435610382. The cubic root of 378564870 is about 723.4026632398.

The spelling of 378564870 in words is "three hundred seventy-eight million, five hundred sixty-four thousand, eight hundred seventy".