20942208 has 192 divisors, whose sum is σ = 71604000. Its totient is φ = 5870592.

The previous prime is 20942183. The next prime is 20942209. The reversal of 20942208 is 80224902.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20942209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395110 + ... + 395162.

Almost surely, 2^20942208 is an apocalyptic number.

20942208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20942208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35802000).

20942208 is an abundant number, since it is smaller than the sum of its proper divisors (50661792).

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

20942208 is an equidigital number, since it uses as much as digits as its factorization.

20942208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20942208 is about 4576.2657265504. The cubic root of 20942208 is about 275.6390998078.

The spelling of 20942208 in words is "twenty million, nine hundred forty-two thousand, two hundred eight".