921130488 has 96 divisors (see below), whose sum is σ = 2700680400. Its totient is φ = 290858688.

The previous prime is 921130481. The next prime is 921130523. The reversal of 921130488 is 884031129.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921130481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72070 + ... + 83882.

Almost surely, 2^921130488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 921130488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350340200).

921130488 is an abundant number, since it is smaller than the sum of its proper divisors (1779549912).

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

921130488 is a wasteful number, since it uses less digits than its factorization.

921130488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11866 (or 11837 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 921130488 is about 30350.1315977378. The cubic root of 921130488 is about 972.9870327233.

The spelling of 921130488 in words is "nine hundred twenty-one million, one hundred thirty thousand, four hundred eighty-eight".