80536890 has 48 divisors (see below), whose sum is σ = 224849952. Its totient is φ = 18408096.

The previous prime is 80536889. The next prime is 80536903. The reversal of 80536890 is 9863508.

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, 25924 + ... + 28863.

It is an arithmetic number, because the mean of its divisors is an integer number (4684374).

Almost surely, 2^80536890 is an apocalyptic number.

80536890 is an abundant number, since it is smaller than the sum of its proper divisors (144313062).

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

80536890 is a wasteful number, since it uses less digits than its factorization.

80536890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54811 (or 54804 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 80536890 is about 8974.2347863202. The cubic root of 80536890 is about 431.8487017327.

The spelling of 80536890 in words is "eighty million, five hundred thirty-six thousand, eight hundred ninety".