20022405 has 16 divisors (see below), whose sum is σ = 34500480. Its totient is φ = 9857088.

The previous prime is 20022323. The next prime is 20022407. The reversal of 20022405 is 50422002.

It is not a de Polignac number, because 20022405 - 2¹³ = 20014213 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022407) 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, 51145 + ... + 51534.

It is an arithmetic number, because the mean of its divisors is an integer number (2156280).

Almost surely, 2^20022405 is an apocalyptic number.

It is an amenable number.

20022405 is a deficient number, since it is larger than the sum of its proper divisors (14478075).

20022405 is a wasteful number, since it uses less digits than its factorization.

20022405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102700.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 20022405 is about 4474.6402090000. The cubic root of 20022405 is about 271.5430847110.

Adding to 20022405 its reverse (50422002), we get a palindrome (70444407).

The spelling of 20022405 in words is "twenty million, twenty-two thousand, four hundred five".