512638386 has 16 divisors (see below), whose sum is σ = 1104144384. Its totient is φ = 157734864.

The previous prime is 512638337. The next prime is 512638387. The reversal of 512638386 is 683836215.

It is a super-2 number, since 2×512638386² = 525596229601369992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (512638387) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3286066 + ... + 3286221.

It is an arithmetic number, because the mean of its divisors is an integer number (69009024).

Almost surely, 2^512638386 is an apocalyptic number.

512638386 is an abundant number, since it is smaller than the sum of its proper divisors (591505998).

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

512638386 is a wasteful number, since it uses less digits than its factorization.

512638386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6572305.

The product of its digits is 207360, while the sum is 42.

The square root of 512638386 is about 22641.5190744791. The cubic root of 512638386 is about 800.3323546147.

The spelling of 512638386 in words is "five hundred twelve million, six hundred thirty-eight thousand, three hundred eighty-six".