920998920 has 128 divisors (see below), whose sum is σ = 2807562240. Its totient is φ = 241678080.

The previous prime is 920998877. The next prime is 920998921. The reversal of 920998920 is 29899029.

It is a self number, because there is not a number n which added to its sum of digits gives 920998920.

It is not an unprimeable number, because it can be changed into a prime (920998921) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3398385 + ... + 3398655.

It is an arithmetic number, because the mean of its divisors is an integer number (21934080).

Almost surely, 2^920998920 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 920998920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403781120).

920998920 is an abundant number, since it is smaller than the sum of its proper divisors (1886563320).

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

920998920 is a wasteful number, since it uses less digits than its factorization.

920998920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 920998920 is about 30347.9640173768. The cubic root of 920998920 is about 972.9407055724.

The spelling of 920998920 in words is "nine hundred twenty million, nine hundred ninety-eight thousand, nine hundred twenty".