823774972 has 48 divisors (see below), whose sum is σ = 1498567392. Its totient is φ = 396032000.

The previous prime is 823774961. The next prime is 823774979. The reversal of 823774972 is 279477328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823774979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3281847 + ... + 3282097.

It is an arithmetic number, because the mean of its divisors is an integer number (31220154).

Almost surely, 2^823774972 is an apocalyptic number.

It is an amenable number.

823774972 is a deficient number, since it is larger than the sum of its proper divisors (674792420).

823774972 is a wasteful number, since it uses less digits than its factorization.

823774972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 556 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 49.

The square root of 823774972 is about 28701.4803102558. The cubic root of 823774972 is about 937.4242795614.

The spelling of 823774972 in words is "eight hundred twenty-three million, seven hundred seventy-four thousand, nine hundred seventy-two".