823152492 has 36 divisors (see below), whose sum is σ = 2089059336. Its totient is φ = 273288000.

The previous prime is 823152479. The next prime is 823152557. The reversal of 823152492 is 294251328.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 36513 + ... + 54584.

It is an arithmetic number, because the mean of its divisors is an integer number (58029426).

Almost surely, 2^823152492 is an apocalyptic number.

It is an amenable number.

823152492 is an abundant number, since it is smaller than the sum of its proper divisors (1265906844).

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

823152492 is a wasteful number, since it uses less digits than its factorization.

823152492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91358 (or 91353 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 823152492 is about 28690.6342209439. The cubic root of 823152492 is about 937.1881006182.

The spelling of 823152492 in words is "eight hundred twenty-three million, one hundred fifty-two thousand, four hundred ninety-two".