20222688 has 48 divisors (see below), whose sum is σ = 55883520.
Its totient is φ = 6385536.
The previous prime is 20222621. The next prime is 20222689. The reversal of 20222688 is 88622202.
It is a tau number, because it is divible by the number of its divisors (48).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20222689) 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, 3720 + ... + 7367.
It is an arithmetic number, because the mean of its divisors is an integer number (1164240).
Almost surely, 220222688 is an apocalyptic number.
It is an amenable number.
20222688 is an abundant number, since it is smaller than the sum of its proper divisors (35660832).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20222688 is a wasteful number, since it uses less digits than its factorization.
20222688 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11119 (or 11111 counting only the distinct ones).
The product of its (nonzero) digits is 6144, while the sum is 30.
The square root of 20222688 is about 4496.9643093981.
The cubic root of 20222688 is about 272.4454925627.
It can be divided in two parts, 20222 and 688, that added together give a triangular number (20910 = T204).
The spelling of 20222688 in words is "twenty million, two hundred twenty-two thousand, six hundred eighty-eight".