1520808128 has 28 divisors (see below), whose sum is σ = 3448976592. Its totient is φ = 651774720.

The previous prime is 1520808043. The next prime is 1520808161. The reversal of 1520808128 is 8218080251.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1696883 + ... + 1697778.

Almost surely, 2^1520808128 is an apocalyptic number.

It is an amenable number.

1520808128 is an abundant number, since it is smaller than the sum of its proper divisors (1928168464).

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

1520808128 is an equidigital number, since it uses as much as digits as its factorization.

1520808128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394680 (or 3394670 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 1520808128 is about 38997.5400249811. The cubic root of 1520808128 is about 1149.9831448065.

Adding to 1520808128 its reverse (8218080251), we get a palindrome (9738888379).

The spelling of 1520808128 in words is "one billion, five hundred twenty million, eight hundred eight thousand, one hundred twenty-eight".