823256238 has 32 divisors (see below), whose sum is σ = 1886238720. Its totient is φ = 234652320.

The previous prime is 823256233. The next prime is 823256267. The reversal of 823256238 is 832652328.

It is a happy number.

It is a super-3 number, since 3×823256238³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 823256196 and 823256205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823256233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5598 + ... + 40961.

It is an arithmetic number, because the mean of its divisors is an integer number (58944960).

Almost surely, 2^823256238 is an apocalyptic number.

823256238 is an abundant number, since it is smaller than the sum of its proper divisors (1062982482).

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

823256238 is a wasteful number, since it uses less digits than its factorization.

823256238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46992.

The product of its digits is 138240, while the sum is 39.

The square root of 823256238 is about 28692.4421755974. The cubic root of 823256238 is about 937.2274717891.

The spelling of 823256238 in words is "eight hundred twenty-three million, two hundred fifty-six thousand, two hundred thirty-eight".