516438 has 24 divisors (see below), whose sum is σ = 1205568. Its totient is φ = 158832.

The previous prime is 516437. The next prime is 516449. The reversal of 516438 is 834615.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 516438.

It is not an unprimeable number, because it can be changed into a prime (516431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 870 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (50232).

2⁵¹⁶⁴³⁸ is an apocalyptic number.

516438 is an abundant number, since it is smaller than the sum of its proper divisors (689130).

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

516438 is a wasteful number, since it uses less digits than its factorization.

516438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228 (or 2225 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 516438 is about 718.6362083836. The cubic root of 516438 is about 80.2304811760.

The spelling of 516438 in words is "five hundred sixteen thousand, four hundred thirty-eight".