511398 has 12 divisors (see below), whose sum is σ = 1108068. Its totient is φ = 170460.

The previous prime is 511391. The next prime is 511409. The reversal of 511398 is 893115.

It is a Curzon number.

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 511398.

It is not an unprimeable number, because it can be changed into a prime (511391) by changing a digit.

511398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14188 + ... + 14223.

It is an arithmetic number, because the mean of its divisors is an integer number (92339).

2⁵¹¹³⁹⁸ is an apocalyptic number.

511398 is an abundant number, since it is smaller than the sum of its proper divisors (596670).

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

511398 is a wasteful number, since it uses less digits than its factorization.

511398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28419 (or 28416 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 511398 is about 715.1209687878. The cubic root of 511398 is about 79.9686335368.

It can be divided in two parts, 511 and 398, that added together give a palindrome (909).

The spelling of 511398 in words is "five hundred eleven thousand, three hundred ninety-eight".