823633972 has 24 divisors (see below), whose sum is σ = 1649963840. Its totient is φ = 352408320.

The previous prime is 823633963. The next prime is 823633973. The reversal of 823633972 is 279336328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823633973) 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, 6429 + ... + 41092.

Almost surely, 2^823633972 is an apocalyptic number.

It is an amenable number.

823633972 is an abundant number, since it is smaller than the sum of its proper divisors (826329868).

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

823633972 is a wasteful number, since it uses less digits than its factorization.

823633972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48151 (or 48149 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 823633972 is about 28699.0238858397. The cubic root of 823633972 is about 937.3707923147.

The spelling of 823633972 in words is "eight hundred twenty-three million, six hundred thirty-three thousand, nine hundred seventy-two".