378505578 has 32 divisors (see below), whose sum is σ = 874411200. Its totient is φ = 107951360.

The previous prime is 378505577. The next prime is 378505583. The reversal of 378505578 is 875505873.

It is a happy number.

It is a super-2 number, since 2×378505578² = 286532945154228168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378505577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167553 + ... + 169796.

It is an arithmetic number, because the mean of its divisors is an integer number (27325350).

Almost surely, 2^378505578 is an apocalyptic number.

378505578 is an abundant number, since it is smaller than the sum of its proper divisors (495905622).

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

378505578 is a wasteful number, since it uses less digits than its factorization.

378505578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337382.

The product of its (nonzero) digits is 1176000, while the sum is 48.

The square root of 378505578 is about 19455.2198137158. The cubic root of 378505578 is about 723.3648940809.

The spelling of 378505578 in words is "three hundred seventy-eight million, five hundred five thousand, five hundred seventy-eight".