80147220 has 96 divisors (see below), whose sum is σ = 232339968. Its totient is φ = 20631552.

The previous prime is 80147189. The next prime is 80147233. The reversal of 80147220 is 2274108.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 273394 + ... + 273686.

It is an arithmetic number, because the mean of its divisors is an integer number (2420208).

Almost surely, 2^80147220 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 80147220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116169984).

80147220 is an abundant number, since it is smaller than the sum of its proper divisors (152192748).

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

80147220 is a wasteful number, since it uses less digits than its factorization.

80147220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 447 counting only the distinct ones).

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

The square root of 80147220 is about 8952.4979754256. The cubic root of 80147220 is about 431.1510892670.

The spelling of 80147220 in words is "eighty million, one hundred forty-seven thousand, two hundred twenty".