20222461 has 8 divisors (see below), whose sum is σ = 23736320. Its totient is φ = 16864848.

The previous prime is 20222459. The next prime is 20222473. The reversal of 20222461 is 16422202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20222461 - 2¹ = 20222459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222161) 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, 38781 + ... + 39298.

It is an arithmetic number, because the mean of its divisors is an integer number (2967040).

Almost surely, 2^20222461 is an apocalyptic number.

It is an amenable number.

20222461 is a deficient number, since it is larger than the sum of its proper divisors (3513859).

20222461 is an equidigital number, since it uses as much as digits as its factorization.

20222461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78123.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20222461 is about 4496.9390700787. The cubic root of 20222461 is about 272.4444731572. Note that the first 4 decimals are identical.

Adding to 20222461 its reverse (16422202), we get a palindrome (36644663).

The spelling of 20222461 in words is "twenty million, two hundred twenty-two thousand, four hundred sixty-one".