378028634920 has 32 divisors (see below), whose sum is σ = 851252142600. Its totient is φ = 151089193728.

The previous prime is 378028634897. The next prime is 378028634927. The reversal of 378028634920 is 29436820873.

It can be written as a sum of positive squares in 4 ways, for example, as 246101319396 + 131927315524 = 496086^2 + 363218^2 .

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (378028634927) 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 7 ways as a sum of consecutive naturals, for example, 3770535 + ... + 3869494.

Almost surely, 2^378028634920 is an apocalyptic number.

It is an amenable number.

378028634920 is an abundant number, since it is smaller than the sum of its proper divisors (473223507680).

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

378028634920 is a wasteful number, since it uses less digits than its factorization.

378028634920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7641277 (or 7641273 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 378028634920 in words is "three hundred seventy-eight billion, twenty-eight million, six hundred thirty-four thousand, nine hundred twenty".