520222378 has 8 divisors (see below), whose sum is σ = 840359268. Its totient is φ = 240102624.

The previous prime is 520222361. The next prime is 520222393. The reversal of 520222378 is 873222025.

It can be written as a sum of positive squares in 2 ways, for example, as 508818249 + 11404129 = 22557^2 + 3377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10004251 + ... + 10004302.

Almost surely, 2^520222378 is an apocalyptic number.

520222378 is a deficient number, since it is larger than the sum of its proper divisors (320136890).

520222378 is a wasteful number, since it uses less digits than its factorization.

520222378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20008568.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 520222378 is about 22808.3839409985. The cubic root of 520222378 is about 804.2597662724.

The spelling of 520222378 in words is "five hundred twenty million, two hundred twenty-two thousand, three hundred seventy-eight".