378428434 has 16 divisors (see below), whose sum is σ = 597898080. Its totient is φ = 179141760.

The previous prime is 378428429. The next prime is 378428437. The reversal of 378428434 is 434824873.

It is not an unprimeable number, because it can be changed into a prime (378428437) 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, 110914 + ... + 114274.

It is an arithmetic number, because the mean of its divisors is an integer number (37368630).

Almost surely, 2^378428434 is an apocalyptic number.

378428434 is a deficient number, since it is larger than the sum of its proper divisors (219469646).

378428434 is a wasteful number, since it uses less digits than its factorization.

378428434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6345.

The product of its digits is 516096, while the sum is 43.

The square root of 378428434 is about 19453.2371085123. The cubic root of 378428434 is about 723.3157472465.

The spelling of 378428434 in words is "three hundred seventy-eight million, four hundred twenty-eight thousand, four hundred thirty-four".