20022174 has 32 divisors (see below), whose sum is σ = 44640000. Its totient is φ = 6652152.

The previous prime is 20022137. The next prime is 20022179. The reversal of 20022174 is 47122002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32037 + ... + 32655.

It is an arithmetic number, because the mean of its divisors is an integer number (1395000).

Almost surely, 2^20022174 is an apocalyptic number.

20022174 is an abundant number, since it is smaller than the sum of its proper divisors (24617826).

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

20022174 is a wasteful number, since it uses less digits than its factorization.

20022174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 20022174 is about 4474.6143967944. The cubic root of 20022174 is about 271.5420404360.

Adding to 20022174 its reverse (47122002), we get a palindrome (67144176).

The spelling of 20022174 in words is "twenty million, twenty-two thousand, one hundred seventy-four".