512972218 has 32 divisors (see below), whose sum is σ = 864597888. Its totient is φ = 226209600.

The previous prime is 512972183. The next prime is 512972249. The reversal of 512972218 is 812279215.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374571 + ... + 375937.

It is an arithmetic number, because the mean of its divisors is an integer number (27018684).

Almost surely, 2^512972218 is an apocalyptic number.

512972218 is a deficient number, since it is larger than the sum of its proper divisors (351625670).

512972218 is a wasteful number, since it uses less digits than its factorization.

512972218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its digits is 20160, while the sum is 37.

The square root of 512972218 is about 22648.8899948761. The cubic root of 512972218 is about 800.5060433743.

The spelling of 512972218 in words is "five hundred twelve million, nine hundred seventy-two thousand, two hundred eighteen".