80520120 has 48 divisors (see below), whose sum is σ = 261691560. Its totient is φ = 21471936.

The previous prime is 80520101. The next prime is 80520127. The reversal of 80520120 is 2102508.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 80520093 and 80520102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80520127) 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 11 ways as a sum of consecutive naturals, for example, 111474 + ... + 112193.

Almost surely, 2^80520120 is an apocalyptic number.

It is an amenable number.

80520120 is an abundant number, since it is smaller than the sum of its proper divisors (181171440).

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

80520120 is a wasteful number, since it uses less digits than its factorization.

80520120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223684 (or 223677 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 80520120 is about 8973.3003961753. The cubic root of 80520120 is about 431.8187253850.

Adding to 80520120 its reverse (2102508), we get a palindrome (82622628).

The spelling of 80520120 in words is "eighty million, five hundred twenty thousand, one hundred twenty".