512344240 has 20 divisors (see below), whose sum is σ = 1191200544. Its totient is φ = 204937664.

The previous prime is 512344207. The next prime is 512344271. The reversal of 512344240 is 42443215.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×512344240² = 524993240522355200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202072 + ... + 3202231.

Almost surely, 2^512344240 is an apocalyptic number.

It is an amenable number.

512344240 is an abundant number, since it is smaller than the sum of its proper divisors (678856304).

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

512344240 is a wasteful number, since it uses less digits than its factorization.

512344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404316 (or 6404310 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 512344240 is about 22635.0224210183. The cubic root of 512344240 is about 800.1792514998.

Adding to 512344240 its reverse (42443215), we get a palindrome (554787455).

The spelling of 512344240 in words is "five hundred twelve million, three hundred forty-four thousand, two hundred forty".