1566152720 has 80 divisors (see below), whose sum is σ = 3996494208. Its totient is φ = 566046720.

The previous prime is 1566152717. The next prime is 1566152759. The reversal of 1566152720 is 272516651.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 141632 + ... + 152288.

Almost surely, 2^1566152720 is an apocalyptic number.

1566152720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1566152720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1998247104).

1566152720 is an abundant number, since it is smaller than the sum of its proper divisors (2430341488).

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

1566152720 is a wasteful number, since it uses less digits than its factorization.

1566152720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10848 (or 10842 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1566152720 is about 39574.6474399962. The cubic root of 1566152720 is about 1161.3007406599.

The spelling of 1566152720 in words is "one billion, five hundred sixty-six million, one hundred fifty-two thousand, seven hundred twenty".