80820838 has 16 divisors (see below), whose sum is σ = 139046400. Its totient is φ = 34513416.

The previous prime is 80820833. The next prime is 80820841. The reversal of 80820838 is 83802808.

It is a junction number, because it is equal to n+sod(n) for n = 80820797 and 80820806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80820833) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6238 + ... + 14161.

It is an arithmetic number, because the mean of its divisors is an integer number (8690400).

Almost surely, 2^80820838 is an apocalyptic number.

80820838 is a deficient number, since it is larger than the sum of its proper divisors (58225562).

80820838 is a wasteful number, since it uses less digits than its factorization.

80820838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20691.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 80820838 is about 8990.0410455125. The cubic root of 80820838 is about 432.3556278014.

The spelling of 80820838 in words is "eighty million, eight hundred twenty thousand, eight hundred thirty-eight".