516332240 has 40 divisors (see below), whose sum is σ = 1241873640. Its totient is φ = 199410176.

The previous prime is 516332231. The next prime is 516332251. The reversal of 516332240 is 42233615.

It can be written as a sum of positive squares in 4 ways, for example, as 678976 + 515653264 = 824^2 + 22708^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108959 + ... + 113598.

It is an arithmetic number, because the mean of its divisors is an integer number (31046841).

Almost surely, 2^516332240 is an apocalyptic number.

It is an amenable number.

516332240 is an abundant number, since it is smaller than the sum of its proper divisors (725541400).

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

516332240 is a wasteful number, since it uses less digits than its factorization.

516332240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222599 (or 222593 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 516332240 is about 22722.9452316376. The cubic root of 516332240 is about 802.2500407130.

Adding to 516332240 its reverse (42233615), we get a palindrome (558565855).

The spelling of 516332240 in words is "five hundred sixteen million, three hundred thirty-two thousand, two hundred forty".