520772140 has 192 divisors, whose sum is σ = 1401523200. Its totient is φ = 158505984.

The previous prime is 520772137. The next prime is 520772177. The reversal of 520772140 is 41277025.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 520772099 and 520772108.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3316942 + ... + 3317098.

It is an arithmetic number, because the mean of its divisors is an integer number (7299600).

Almost surely, 2^520772140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520772140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700761600).

520772140 is an abundant number, since it is smaller than the sum of its proper divisors (880751060).

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

520772140 is a wasteful number, since it uses less digits than its factorization.

520772140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 520772140 is about 22820.4325112387. The cubic root of 520772140 is about 804.5429757966.

The spelling of 520772140 in words is "five hundred twenty million, seven hundred seventy-two thousand, one hundred forty".