512240 has 40 divisors (see below), whose sum is σ = 1257360. Its totient is φ = 193536.

The previous prime is 512207. The next prime is 512249. The reversal of 512240 is 42215.

512240 = T₂₄₅ + T₂₄₆ + ... + T₂₆₀.

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (31434).

2⁵¹²²⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628680).

512240 is an abundant number, since it is smaller than the sum of its proper divisors (745120).

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

512240 is a wasteful number, since it uses less digits than its factorization.

512240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 512240 is about 715.7094382499. The cubic root of 512240 is about 80.0124980474.

Adding to 512240 its reverse (42215), we get a palindrome (554455).

The spelling of 512240 in words is "five hundred twelve thousand, two hundred forty".