378090506 has 32 divisors (see below), whose sum is σ = 611867520. Its totient is φ = 174583296.

The previous prime is 378090451. The next prime is 378090509. The reversal of 378090506 is 605090873.

It is a self number, because there is not a number n which added to its sum of digits gives 378090506.

It is not an unprimeable number, because it can be changed into a prime (378090509) 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, 861035 + ... + 861473.

It is an arithmetic number, because the mean of its divisors is an integer number (19120860).

Almost surely, 2^378090506 is an apocalyptic number.

378090506 is a deficient number, since it is larger than the sum of its proper divisors (233777014).

378090506 is a wasteful number, since it uses less digits than its factorization.

378090506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 378090506 is about 19444.5495190812. The cubic root of 378090506 is about 723.1003816146.

The spelling of 378090506 in words is "three hundred seventy-eight million, ninety thousand, five hundred six".