512331420 has 48 divisors (see below), whose sum is σ = 1480808448. Its totient is φ = 132214080.

The previous prime is 512331403. The next prime is 512331427. The reversal of 512331420 is 24133215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512331427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135864 + ... + 139583.

It is an arithmetic number, because the mean of its divisors is an integer number (30850176).

Almost surely, 2^512331420 is an apocalyptic number.

It is an amenable number.

512331420 is an abundant number, since it is smaller than the sum of its proper divisors (968477028).

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

512331420 is a wasteful number, since it uses less digits than its factorization.

512331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275490 (or 275488 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 512331420 is about 22634.7392297769. The cubic root of 512331420 is about 800.1725773520.

Adding to 512331420 its reverse (24133215), we get a palindrome (536464635).

The spelling of 512331420 in words is "five hundred twelve million, three hundred thirty-one thousand, four hundred twenty".