20222474 has 16 divisors (see below), whose sum is σ = 31752000. Its totient is φ = 9641280.

The previous prime is 20222473. The next prime is 20222557. The reversal of 20222474 is 47422202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20222473) 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, 22514 + ... + 23394.

It is an arithmetic number, because the mean of its divisors is an integer number (1984500).

Almost surely, 2^20222474 is an apocalyptic number.

20222474 is a deficient number, since it is larger than the sum of its proper divisors (11529526).

20222474 is a wasteful number, since it uses less digits than its factorization.

20222474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 20222474 is about 4496.9405155061. The cubic root of 20222474 is about 272.4445315374. Note that the first 3 decimals are identical.

Adding to 20222474 its reverse (47422202), we get a palindrome (67644676).

The spelling of 20222474 in words is "twenty million, two hundred twenty-two thousand, four hundred seventy-four".