823172748 has 24 divisors (see below), whose sum is σ = 1942320240. Its totient is φ = 271307520.

The previous prime is 823172741. The next prime is 823172761. The reversal of 823172748 is 847271328.

It is a super-2 number, since 2×823172748² = 1355226746099743008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (823172741) 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, 384313 + ... + 386448.

It is an arithmetic number, because the mean of its divisors is an integer number (80930010).

Almost surely, 2^823172748 is an apocalyptic number.

It is an amenable number.

823172748 is an abundant number, since it is smaller than the sum of its proper divisors (1119147492).

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

823172748 is a wasteful number, since it uses less digits than its factorization.

823172748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770857 (or 770855 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 823172748 is about 28690.9872259565. The cubic root of 823172748 is about 937.1957879449.

The spelling of 823172748 in words is "eight hundred twenty-three million, one hundred seventy-two thousand, seven hundred forty-eight".