520231432400 has 30 divisors (see below), whose sum is σ = 1249856017302. Its totient is φ = 208092572800.

The previous prime is 520231432393. The next prime is 520231432423. The reversal of 520231432400 is 4234132025.

It can be written as a sum of positive squares in 3 ways, for example, as 3904576 + 520227527824 = 1976^2 + 721268^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520231432400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 650288891 + ... + 650289690.

Almost surely, 2^520231432400 is an apocalyptic number.

520231432400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520231432400 is an abundant number, since it is smaller than the sum of its proper divisors (729624584902).

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

520231432400 is a wasteful number, since it uses less digits than its factorization.

520231432400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300578599 (or 1300578588 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 520231432400 its reverse (4234132025), we get a palindrome (524465564425).

The spelling of 520231432400 in words is "five hundred twenty billion, two hundred thirty-one million, four hundred thirty-two thousand, four hundred".