520772340 has 96 divisors (see below), whose sum is σ = 1596744576. Its totient is φ = 125770240.

The previous prime is 520772327. The next prime is 520772347. The reversal of 520772340 is 43277025.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 520772298 and 520772307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520772347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192034 + ... + 194726.

It is an arithmetic number, because the mean of its divisors is an integer number (16632756).

Almost surely, 2^520772340 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 520772340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798372288).

520772340 is an abundant number, since it is smaller than the sum of its proper divisors (1075972236).

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

520772340 is a wasteful number, since it uses less digits than its factorization.

520772340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009 (or 3007 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 520772340 is about 22820.4368932762. The cubic root of 520772340 is about 804.5430787901.

The spelling of 520772340 in words is "five hundred twenty million, seven hundred seventy-two thousand, three hundred forty".