80503220 has 72 divisors (see below), whose sum is σ = 202159104. Its totient is φ = 26376768.

The previous prime is 80503219. The next prime is 80503271. The reversal of 80503220 is 2230508.

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 = 80503192 and 80503201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73517 + ... + 74603.

Almost surely, 2^80503220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80503220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101079552).

80503220 is an abundant number, since it is smaller than the sum of its proper divisors (121655884).

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

80503220 is a wasteful number, since it uses less digits than its factorization.

80503220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 80503220 is about 8972.3586642532. The cubic root of 80503220 is about 431.7885124516.

Adding to 80503220 its reverse (2230508), we get a palindrome (82733728).

The spelling of 80503220 in words is "eighty million, five hundred three thousand, two hundred twenty".