80047820 has 24 divisors (see below), whose sum is σ = 175410144. Its totient is φ = 30626816.

The previous prime is 80047819. The next prime is 80047823. The reversal of 80047820 is 2874008.

It is not an unprimeable number, because it can be changed into a prime (80047823) 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, 86549 + ... + 87468.

It is an arithmetic number, because the mean of its divisors is an integer number (7308756).

Almost surely, 2^80047820 is an apocalyptic number.

It is an amenable number.

80047820 is an abundant number, since it is smaller than the sum of its proper divisors (95362324).

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

80047820 is a wasteful number, since it uses less digits than its factorization.

80047820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174049 (or 174047 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 80047820 is about 8946.9447299064. The cubic root of 80047820 is about 430.9727751280.

The spelling of 80047820 in words is "eighty million, forty-seven thousand, eight hundred twenty".