921567248 has 40 divisors (see below), whose sum is σ = 2042815680. Its totient is φ = 394531200.

The previous prime is 921567247. The next prime is 921567259. The reversal of 921567248 is 842765129.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 921567199 and 921567208.

It is not an unprimeable number, because it can be changed into a prime (921567247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113798 + ... + 121626.

It is an arithmetic number, because the mean of its divisors is an integer number (51070392).

Almost surely, 2^921567248 is an apocalyptic number.

It is an amenable number.

921567248 is an abundant number, since it is smaller than the sum of its proper divisors (1121248432).

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

921567248 is a wasteful number, since it uses less digits than its factorization.

921567248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8895 (or 8889 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 921567248 is about 30357.3261009596. The cubic root of 921567248 is about 973.1407911297.

The spelling of 921567248 in words is "nine hundred twenty-one million, five hundred sixty-seven thousand, two hundred forty-eight".