1520404116 has 48 divisors (see below), whose sum is σ = 4422996480. Its totient is φ = 394909920.

The previous prime is 1520404091. The next prime is 1520404147. The reversal of 1520404116 is 6114040251.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821806 + ... + 823653.

It is an arithmetic number, because the mean of its divisors is an integer number (92145760).

Almost surely, 2^1520404116 is an apocalyptic number.

It is an amenable number.

1520404116 is an abundant number, since it is smaller than the sum of its proper divisors (2902592364).

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

1520404116 is a wasteful number, since it uses less digits than its factorization.

1520404116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645484 (or 1645482 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1520404116 is about 38992.3597131541. The cubic root of 1520404116 is about 1149.8813024308.

Adding to 1520404116 its reverse (6114040251), we get a palindrome (7634444367).

The spelling of 1520404116 in words is "one billion, five hundred twenty million, four hundred four thousand, one hundred sixteen".