1565480728 has 32 divisors (see below), whose sum is σ = 3404678400. Its totient is φ = 660904992.

The previous prime is 1565480713. The next prime is 1565480753. The reversal of 1565480728 is 8270845651.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204868 + ... + 212371.

It is an arithmetic number, because the mean of its divisors is an integer number (106396200).

Almost surely, 2^1565480728 is an apocalyptic number.

It is an amenable number.

1565480728 is an abundant number, since it is smaller than the sum of its proper divisors (1839197672).

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

1565480728 is a wasteful number, since it uses less digits than its factorization.

1565480728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417319 (or 417315 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 1565480728 is about 39566.1563460491. The cubic root of 1565480728 is about 1161.1346230909.

The spelling of 1565480728 in words is "one billion, five hundred sixty-five million, four hundred eighty thousand, seven hundred twenty-eight".