20220406 has 16 divisors (see below), whose sum is σ = 31223808. Its totient is φ = 9815400.

The previous prime is 20220383. The next prime is 20220407. The reversal of 20220406 is 60402202.

It is a self number, because there is not a number n which added to its sum of digits gives 20220406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15811 + ... + 17041.

It is an arithmetic number, because the mean of its divisors is an integer number (1951488).

Almost surely, 2^20220406 is an apocalyptic number.

20220406 is a deficient number, since it is larger than the sum of its proper divisors (11003402).

20220406 is a wasteful number, since it uses less digits than its factorization.

20220406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20220406 is about 4496.7105755207. The cubic root of 20220406 is about 272.4352442712.

Adding to 20220406 its reverse (60402202), we get a palindrome (80622608).

The spelling of 20220406 in words is "twenty million, two hundred twenty thousand, four hundred six".