520241400 has 192 divisors, whose sum is σ = 2048083200. Its totient is φ = 118903680.

The previous prime is 520241339. The next prime is 520241419. The reversal of 520241400 is 4142025.

520241400 is a `hidden beast` number, since 5 + 20 + 241 + 400 = 666.

It is a super-2 number, since 2×520241400² = 541302228547920000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30919 + ... + 44681.

It is an arithmetic number, because the mean of its divisors is an integer number (10667100).

Almost surely, 2^520241400 is an apocalyptic number.

520241400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520241400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1024041600).

520241400 is an abundant number, since it is smaller than the sum of its proper divisors (1527841800).

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

520241400 is a wasteful number, since it uses less digits than its factorization.

520241400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13795 (or 13780 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 520241400 is about 22808.8009329732. The cubic root of 520241400 is about 804.2695687745.

Adding to 520241400 its reverse (4142025), we get a palindrome (524383425).

The spelling of 520241400 in words is "five hundred twenty million, two hundred forty-one thousand, four hundred".