511238 has 24 divisors (see below), whose sum is σ = 961968. Its totient is φ = 198432.

The previous prime is 511237. The next prime is 511243. The reversal of 511238 is 832115.

It is a super-2 number, since 2×511238² = 522728585288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9620 + ... + 9672.

It is an arithmetic number, because the mean of its divisors is an integer number (40082).

2⁵¹¹²³⁸ is an apocalyptic number.

511238 is a deficient number, since it is larger than the sum of its proper divisors (450730).

511238 is a wasteful number, since it uses less digits than its factorization.

511238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 75 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 511238 is about 715.0090908513. The cubic root of 511238 is about 79.9602927950.

The spelling of 511238 in words is "five hundred eleven thousand, two hundred thirty-eight".