80823838 has 4 divisors (see below), whose sum is σ = 121235760. Its totient is φ = 40411918.

The previous prime is 80823829. The next prime is 80823839. The reversal of 80823838 is 83832808.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 80823838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80823839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20205958 + ... + 20205961.

It is an arithmetic number, because the mean of its divisors is an integer number (30308940).

Almost surely, 2^80823838 is an apocalyptic number.

80823838 is a deficient number, since it is larger than the sum of its proper divisors (40411922).

80823838 is a wasteful number, since it uses less digits than its factorization.

80823838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40411921.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 80823838 is about 8990.2078952603. The cubic root of 80823838 is about 432.3609772916.

The spelling of 80823838 in words is "eighty million, eight hundred twenty-three thousand, eight hundred thirty-eight".