512222440 has 32 divisors (see below), whose sum is σ = 1153152000. Its totient is φ = 204773184.

The previous prime is 512222423. The next prime is 512222519. The reversal of 512222440 is 44222215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121081 + ... + 125239.

It is an arithmetic number, because the mean of its divisors is an integer number (36036000).

Almost surely, 2^512222440 is an apocalyptic number.

It is an amenable number.

512222440 is an abundant number, since it is smaller than the sum of its proper divisors (640929560).

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

512222440 is a wasteful number, since it uses less digits than its factorization.

512222440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7249 (or 7245 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 512222440 is about 22632.3317402339. The cubic root of 512222440 is about 800.1158373930.

Adding to 512222440 its reverse (44222215), we get a palindrome (556444655).

The spelling of 512222440 in words is "five hundred twelve million, two hundred twenty-two thousand, four hundred forty".