517386040 has 64 divisors (see below), whose sum is σ = 1188250560. Its totient is φ = 202705920.

The previous prime is 517386029. The next prime is 517386047. The reversal of 517386040 is 40683715.

It is a junction number, because it is equal to n+sod(n) for n = 517385987 and 517386005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517386047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487110 + ... + 488170.

It is an arithmetic number, because the mean of its divisors is an integer number (18566415).

Almost surely, 2^517386040 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 517386040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594125280).

517386040 is an abundant number, since it is smaller than the sum of its proper divisors (670864520).

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

517386040 is a wasteful number, since it uses less digits than its factorization.

517386040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 517386040 is about 22746.1214276193. The cubic root of 517386040 is about 802.7954496158.

The spelling of 517386040 in words is "five hundred seventeen million, three hundred eighty-six thousand, forty".