20922330 has 64 divisors (see below), whose sum is σ = 59004288. Its totient is φ = 4680960.

The previous prime is 20922323. The next prime is 20922347. The reversal of 20922330 is 3322902.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20922297 and 20922306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1852 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (921942).

Almost surely, 2^20922330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20922330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29502144).

20922330 is an abundant number, since it is smaller than the sum of its proper divisors (38081958).

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

20922330 is a wasteful number, since it uses less digits than its factorization.

20922330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 20922330 is about 4574.0933527859. The cubic root of 20922330 is about 275.5518614976.

The spelling of 20922330 in words is "twenty million, nine hundred twenty-two thousand, three hundred thirty".