80471220 has 24 divisors (see below), whose sum is σ = 225319584. Its totient is φ = 21458976.

The previous prime is 80471179. The next prime is 80471249. The reversal of 80471220 is 2217408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670534 + ... + 670653.

It is an arithmetic number, because the mean of its divisors is an integer number (9388316).

Almost surely, 2^80471220 is an apocalyptic number.

It is an amenable number.

80471220 is an abundant number, since it is smaller than the sum of its proper divisors (144848364).

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

80471220 is a wasteful number, since it uses less digits than its factorization.

80471220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341199 (or 1341197 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 80471220 is about 8970.5752323917. The cubic root of 80471220 is about 431.7312929450.

Adding to 80471220 its reverse (2217408), we get a palindrome (82688628).

The spelling of 80471220 in words is "eighty million, four hundred seventy-one thousand, two hundred twenty".