520271424 has 70 divisors (see below), whose sum is σ = 1542262854. Its totient is φ = 173422080.

The previous prime is 520271407. The next prime is 520271429. The reversal of 520271424 is 424172025.

It can be written as a sum of positive squares in only one way, i.e., 350438400 + 169833024 = 18720^2 + 13032^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (520271429) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 44997 + ... + 55364.

Almost surely, 2^520271424 is an apocalyptic number.

520271424 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

520271424 is an abundant number, since it is smaller than the sum of its proper divisors (1021991430).

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

520271424 is a wasteful number, since it uses less digits than its factorization.

520271424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100385 (or 100366 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 520271424 is about 22809.4590904738. The cubic root of 520271424 is about 804.2850403902.

The spelling of 520271424 in words is "five hundred twenty million, two hundred seventy-one thousand, four hundred twenty-four".