823198026 has 16 divisors (see below), whose sum is σ = 1881595584. Its totient is φ = 235199424.

The previous prime is 823198007. The next prime is 823198027. The reversal of 823198026 is 620891328.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (823198027) 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, 9799935 + ... + 9800018.

It is an arithmetic number, because the mean of its divisors is an integer number (117599724).

Almost surely, 2^823198026 is an apocalyptic number.

823198026 is an abundant number, since it is smaller than the sum of its proper divisors (1058397558).

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

823198026 is a wasteful number, since it uses less digits than its factorization.

823198026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19599965.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 823198026 is about 28691.4277441887. The cubic root of 823198026 is about 937.2053809871.

The spelling of 823198026 in words is "eight hundred twenty-three million, one hundred ninety-eight thousand, twenty-six".