80707220 has 24 divisors (see below), whose sum is σ = 184893408. Its totient is φ = 29348000.

The previous prime is 80707219. The next prime is 80707223. The reversal of 80707220 is 2270708.

It is a self number, because there is not a number n which added to its sum of digits gives 80707220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80707223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183206 + ... + 183645.

It is an arithmetic number, because the mean of its divisors is an integer number (7703892).

Almost surely, 2^80707220 is an apocalyptic number.

It is an amenable number.

80707220 is an abundant number, since it is smaller than the sum of its proper divisors (104186188).

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

80707220 is a wasteful number, since it uses less digits than its factorization.

80707220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366871 (or 366869 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 80707220 is about 8983.7197195816. The cubic root of 80707220 is about 432.1529308231.

Adding to 80707220 its reverse (2270708), we get a palindrome (82977928).

The spelling of 80707220 in words is "eighty million, seven hundred seven thousand, two hundred twenty".