1520076520 has 16 divisors (see below), whose sum is σ = 3420172260. Its totient is φ = 608030592.

The previous prime is 1520076511. The next prime is 1520076527. The reversal of 1520076520 is 256700251.

It can be written as a sum of positive squares in 2 ways, for example, as 1505284804 + 14791716 = 38798^2 + 3846^2 .

It is not an unprimeable number, because it can be changed into a prime (1520076527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19000917 + ... + 19000996.

Almost surely, 2^1520076520 is an apocalyptic number.

1520076520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520076520 is an abundant number, since it is smaller than the sum of its proper divisors (1900095740).

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

1520076520 is a wasteful number, since it uses less digits than its factorization.

1520076520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38001924 (or 38001920 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1520076520 is about 38988.1587151792. The cubic root of 1520076520 is about 1149.7987095707.

Adding to 1520076520 its reverse (256700251), we get a palindrome (1776776771).

The spelling of 1520076520 in words is "one billion, five hundred twenty million, seventy-six thousand, five hundred twenty".