823540632 has 16 divisors (see below), whose sum is σ = 2058851640. Its totient is φ = 274513536.

The previous prime is 823540631. The next prime is 823540633. The reversal of 823540632 is 236045328.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (823540631) and next prime (823540633).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 823540593 and 823540602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823540631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17157073 + ... + 17157120.

Almost surely, 2^823540632 is an apocalyptic number.

It is an amenable number.

823540632 is an abundant number, since it is smaller than the sum of its proper divisors (1235311008).

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

823540632 is a wasteful number, since it uses less digits than its factorization.

823540632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34314202 (or 34314198 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 823540632 is about 28697.3976520520. The cubic root of 823540632 is about 937.3353811579.

The spelling of 823540632 in words is "eight hundred twenty-three million, five hundred forty thousand, six hundred thirty-two".