20668362 has 96 divisors (see below), whose sum is σ = 52176960. Its totient is φ = 5391360.

The previous prime is 20668343. The next prime is 20668363. The reversal of 20668362 is 26386602.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20668363) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189564 + ... + 189672.

It is an arithmetic number, because the mean of its divisors is an integer number (543510).

Almost surely, 2^20668362 is an apocalyptic number.

20668362 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20668362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26088480).

20668362 is an abundant number, since it is smaller than the sum of its proper divisors (31508598).

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

20668362 is a wasteful number, since it uses less digits than its factorization.

20668362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 20668362 is about 4546.2470236449. The cubic root of 20668362 is about 274.4323807152.

The spelling of 20668362 in words is "twenty million, six hundred sixty-eight thousand, three hundred sixty-two".