520752240 has 100 divisors (see below), whose sum is σ = 1808672184. Its totient is φ = 138865536.

The previous prime is 520752233. The next prime is 520752257. The reversal of 520752240 is 42257025.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33702 + ... + 46661.

Almost surely, 2^520752240 is an apocalyptic number.

It is an amenable number.

520752240 is an abundant number, since it is smaller than the sum of its proper divisors (1287919944).

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

520752240 is a wasteful number, since it uses less digits than its factorization.

520752240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80388 (or 80373 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 520752240 is about 22819.9964943030. The cubic root of 520752240 is about 804.5327278027.

The spelling of 520752240 in words is "five hundred twenty million, seven hundred fifty-two thousand, two hundred forty".