520213438 has 4 divisors (see below), whose sum is σ = 780320160. Its totient is φ = 260106718.

The previous prime is 520213427. The next prime is 520213439. The reversal of 520213438 is 834312025.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520213439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130053358 + ... + 130053361.

It is an arithmetic number, because the mean of its divisors is an integer number (195080040).

Almost surely, 2^520213438 is an apocalyptic number.

520213438 is a deficient number, since it is larger than the sum of its proper divisors (260106722).

520213438 is a wasteful number, since it uses less digits than its factorization.

520213438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260106721.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 520213438 is about 22808.1879595903. The cubic root of 520213438 is about 804.2551591891.

The spelling of 520213438 in words is "five hundred twenty million, two hundred thirteen thousand, four hundred thirty-eight".