20221368 has 32 divisors (see below), whose sum is σ = 51269760. Its totient is φ = 6644960.

The previous prime is 20221343. The next prime is 20221379. The reversal of 20221368 is 86312202.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4230 + ... + 7637.

It is an arithmetic number, because the mean of its divisors is an integer number (1602180).

Almost surely, 2^20221368 is an apocalyptic number.

It is an amenable number.

20221368 is an abundant number, since it is smaller than the sum of its proper divisors (31048392).

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

20221368 is a wasteful number, since it uses less digits than its factorization.

20221368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11947 (or 11943 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20221368 is about 4496.8175413285. The cubic root of 20221368 is about 272.4395646353.

The spelling of 20221368 in words is "twenty million, two hundred twenty-one thousand, three hundred sixty-eight".