80209890 has 48 divisors (see below), whose sum is σ = 209297088. Its totient is φ = 21312288.

The previous prime is 80209867. The next prime is 80209891. The reversal of 80209890 is 9890208.

It is not an unprimeable number, because it can be changed into a prime (80209891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26179 + ... + 29081.

It is an arithmetic number, because the mean of its divisors is an integer number (4360356).

Almost surely, 2^80209890 is an apocalyptic number.

80209890 is an abundant number, since it is smaller than the sum of its proper divisors (129087198).

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

80209890 is a wasteful number, since it uses less digits than its factorization.

80209890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223 (or 3220 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 80209890 is about 8955.9974318889. The cubic root of 80209890 is about 431.2634375145.

The spelling of 80209890 in words is "eighty million, two hundred nine thousand, eight hundred ninety".