20842368 has 32 divisors (see below), whose sum is σ = 55363560. Its totient is φ = 6947328.

The previous prime is 20842361. The next prime is 20842397. The reversal of 20842368 is 86324802.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20842361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26755 + ... + 27522.

Almost surely, 2^20842368 is an apocalyptic number.

It is an amenable number.

20842368 is an abundant number, since it is smaller than the sum of its proper divisors (34521192).

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

20842368 is an equidigital number, since it uses as much as digits as its factorization.

20842368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54294 (or 54282 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 20842368 is about 4565.3442367471. The cubic root of 20842368 is about 275.2003740756.

The spelling of 20842368 in words is "twenty million, eight hundred forty-two thousand, three hundred sixty-eight".