518684712 has 128 divisors (see below), whose sum is σ = 1626428160. Its totient is φ = 134184960.

The previous prime is 518684689. The next prime is 518684729. The reversal of 518684712 is 217486815.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113512 + ... + 117992.

It is an arithmetic number, because the mean of its divisors is an integer number (12706470).

Almost surely, 2^518684712 is an apocalyptic number.

518684712 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518684712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813214080).

518684712 is an abundant number, since it is smaller than the sum of its proper divisors (1107743448).

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

518684712 is a wasteful number, since it uses less digits than its factorization.

518684712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563 (or 4559 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 518684712 is about 22774.6506449605. The cubic root of 518684712 is about 803.4665776852.

It can be divided in two parts, 5186 and 84712, that added together give a palindrome (89898).

The spelling of 518684712 in words is "five hundred eighteen million, six hundred eighty-four thousand, seven hundred twelve".