20922496 has 64 divisors (see below), whose sum is σ = 50184000. Its totient is φ = 8487936.

The previous prime is 20922491. The next prime is 20922523. The reversal of 20922496 is 69422902.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (20922491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16410 + ... + 17638.

It is an arithmetic number, because the mean of its divisors is an integer number (784125).

Almost surely, 2^20922496 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 20922496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25092000).

20922496 is an abundant number, since it is smaller than the sum of its proper divisors (29261504).

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

20922496 is a wasteful number, since it uses less digits than its factorization.

20922496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 20922496 is about 4574.1114984224. Note that the first 3 decimals coincide. The cubic root of 20922496 is about 275.5525902483.

The spelling of 20922496 in words is "twenty million, nine hundred twenty-two thousand, four hundred ninety-six".