513838 has 8 divisors (see below), whose sum is σ = 830088. Its totient is φ = 237144.

The previous prime is 513829. The next prime is 513839. The reversal of 513838 is 838315.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513839) by changing a digit.

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, 9856 + ... + 9907.

It is an arithmetic number, because the mean of its divisors is an integer number (103761).

2⁵¹³⁸³⁸ is an apocalyptic number.

513838 is a deficient number, since it is larger than the sum of its proper divisors (316250).

513838 is a wasteful number, since it uses less digits than its factorization.

513838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19778.

The product of its digits is 2880, while the sum is 28.

The square root of 513838 is about 716.8249437624. The cubic root of 513838 is about 80.0956148437.

The spelling of 513838 in words is "five hundred thirteen thousand, eight hundred thirty-eight".