20222340 has 24 divisors (see below), whose sum is σ = 56622720. Its totient is φ = 5392608.

The previous prime is 20222329. The next prime is 20222351. The reversal of 20222340 is 4322202.

It is an interprime number because it is at equal distance from previous prime (20222329) and next prime (20222351).

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 168460 + ... + 168579.

It is an arithmetic number, because the mean of its divisors is an integer number (2359280).

Almost surely, 2^20222340 is an apocalyptic number.

20222340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222340 is an abundant number, since it is smaller than the sum of its proper divisors (36400380).

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

20222340 is a wasteful number, since it uses less digits than its factorization.

20222340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337051 (or 337049 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20222340 is about 4496.9256164629. The cubic root of 20222340 is about 272.4439297705.

Adding to 20222340 its reverse (4322202), we get a palindrome (24544542).

The spelling of 20222340 in words is "twenty million, two hundred twenty-two thousand, three hundred forty".