520722236 has 12 divisors (see below), whose sum is σ = 924099120. Its totient is φ = 256693920.

The previous prime is 520722211. The next prime is 520722239. The reversal of 520722236 is 632227025.

It is a junction number, because it is equal to n+sod(n) for n = 520722199 and 520722208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520722239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916481 + ... + 917048.

It is an arithmetic number, because the mean of its divisors is an integer number (77008260).

Almost surely, 2^520722236 is an apocalyptic number.

It is an amenable number.

520722236 is a deficient number, since it is larger than the sum of its proper divisors (403376884).

520722236 is a wasteful number, since it uses less digits than its factorization.

520722236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833604 (or 1833602 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 520722236 is about 22819.3390789479. The cubic root of 520722236 is about 804.5172760121.

The spelling of 520722236 in words is "five hundred twenty million, seven hundred twenty-two thousand, two hundred thirty-six".