1512729220 has 24 divisors (see below), whose sum is σ = 3194290008. Its totient is φ = 601747200.

The previous prime is 1512729193. The next prime is 1512729223. The reversal of 1512729220 is 229272151.

It can be written as a sum of positive squares in 4 ways, for example, as 80712256 + 1432016964 = 8984^2 + 37842^2 .

It is not an unprimeable number, because it can be changed into a prime (1512729223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205321 + ... + 212560.

It is an arithmetic number, because the mean of its divisors is an integer number (133095417).

Almost surely, 2^1512729220 is an apocalyptic number.

1512729220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1512729220 is an abundant number, since it is smaller than the sum of its proper divisors (1681560788).

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

1512729220 is a wasteful number, since it uses less digits than its factorization.

1512729220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418071 (or 418069 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1512729220 is about 38893.8198175494. The cubic root of 1512729220 is about 1147.9431968964.

The spelling of 1512729220 in words is "one billion, five hundred twelve million, seven hundred twenty-nine thousand, two hundred twenty".