80444780 has 24 divisors (see below), whose sum is σ = 181929552. Its totient is φ = 29702592.

The previous prime is 80444761. The next prime is 80444821. The reversal of 80444780 is 8744408.

It is a self number, because there is not a number n which added to its sum of digits gives 80444780.

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, 154442 + ... + 154961.

It is an arithmetic number, because the mean of its divisors is an integer number (7580398).

Almost surely, 2^80444780 is an apocalyptic number.

It is an amenable number.

80444780 is an abundant number, since it is smaller than the sum of its proper divisors (101484772).

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

80444780 is a wasteful number, since it uses less digits than its factorization.

80444780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309425 (or 309423 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 80444780 is about 8969.1014042656. The cubic root of 80444780 is about 431.6840038819.

The spelling of 80444780 in words is "eighty million, four hundred forty-four thousand, seven hundred eighty".