516440306 has 8 divisors (see below), whose sum is σ = 777985884. Its totient is φ = 257111680.

The previous prime is 516440299. The next prime is 516440333. The reversal of 516440306 is 603044615.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 512796025 + 3644281 = 22645^2 + 1909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×516440306² = 533421179322747272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553655 + ... + 554586.

Almost surely, 2^516440306 is an apocalyptic number.

516440306 is a deficient number, since it is larger than the sum of its proper divisors (261545578).

516440306 is a wasteful number, since it uses less digits than its factorization.

516440306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108476.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 516440306 is about 22725.3230120058. The cubic root of 516440306 is about 802.3060059092.

The spelling of 516440306 in words is "five hundred sixteen million, four hundred forty thousand, three hundred six".