520434138 has 32 divisors (see below), whose sum is σ = 1227939840. Its totient is φ = 143898480.

The previous prime is 520434137. The next prime is 520434139. The reversal of 520434138 is 831434025.

It is an interprime number because it is at equal distance from previous prime (520434137) and next prime (520434139).

It is not an unprimeable number, because it can be changed into a prime (520434137) 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, 198558 + ... + 201161.

It is an arithmetic number, because the mean of its divisors is an integer number (38373120).

Almost surely, 2^520434138 is an apocalyptic number.

520434138 is an abundant number, since it is smaller than the sum of its proper divisors (707505702).

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

520434138 is a wasteful number, since it uses less digits than its factorization.

520434138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399762.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 520434138 is about 22813.0256213419. The cubic root of 520434138 is about 804.3688779087.

The spelling of 520434138 in words is "five hundred twenty million, four hundred thirty-four thousand, one hundred thirty-eight".