80520808 has 8 divisors (see below), whose sum is σ = 150976530. Its totient is φ = 40260400.

The previous prime is 80520799. The next prime is 80520809. The reversal of 80520808 is 80802508.

It can be written as a sum of positive squares in only one way, i.e., 56881764 + 23639044 = 7542^2 + 4862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 80520808.

It is not an unprimeable number, because it can be changed into a prime (80520809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5032543 + ... + 5032558.

Almost surely, 2^80520808 is an apocalyptic number.

It is an amenable number.

80520808 is a deficient number, since it is larger than the sum of its proper divisors (70455722).

80520808 is a wasteful number, since it uses less digits than its factorization.

80520808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065107 (or 10065103 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 80520808 is about 8973.3387320439. The cubic root of 80520808 is about 431.8199552658.

The spelling of 80520808 in words is "eighty million, five hundred twenty thousand, eight hundred eight".