80212520 has 32 divisors (see below), whose sum is σ = 181029600. Its totient is φ = 31987008.

The previous prime is 80212513. The next prime is 80212529. The reversal of 80212520 is 2521208.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 80212492 and 80212501.

It is not an unprimeable number, because it can be changed into a prime (80212529) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10991 + ... + 16769.

It is an arithmetic number, because the mean of its divisors is an integer number (5657175).

Almost surely, 2^80212520 is an apocalyptic number.

It is an amenable number.

80212520 is an abundant number, since it is smaller than the sum of its proper divisors (100817080).

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

80212520 is a wasteful number, since it uses less digits than its factorization.

80212520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6137 (or 6133 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 80212520 is about 8956.1442596689. The cubic root of 80212520 is about 431.2681510249.

Adding to 80212520 its reverse (2521208), we get a palindrome (82733728).

The spelling of 80212520 in words is "eighty million, two hundred twelve thousand, five hundred twenty".