920821622 has 24 divisors (see below), whose sum is σ = 1611000576. Its totient is φ = 393591408.

The previous prime is 920821621. The next prime is 920821687. The reversal of 920821622 is 226128029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920821621) 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 11 ways as a sum of consecutive naturals, for example, 25268 + ... + 49800.

It is an arithmetic number, because the mean of its divisors is an integer number (67125024).

Almost surely, 2^920821622 is an apocalyptic number.

920821622 is a deficient number, since it is larger than the sum of its proper divisors (690178954).

920821622 is a wasteful number, since it uses less digits than its factorization.

920821622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24932 (or 24925 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 920821622 is about 30345.0427912040. The cubic root of 920821622 is about 972.8782691939.

The spelling of 920821622 in words is "nine hundred twenty million, eight hundred twenty-one thousand, six hundred twenty-two".