20470422 has 16 divisors (see below), whose sum is σ = 46789632. Its totient is φ = 5848680.

The previous prime is 20470421. The next prime is 20470459. The reversal of 20470422 is 22407402.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470421) 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, 243654 + ... + 243737.

It is an arithmetic number, because the mean of its divisors is an integer number (2924352).

Almost surely, 2^20470422 is an apocalyptic number.

20470422 is an abundant number, since it is smaller than the sum of its proper divisors (26319210).

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

20470422 is a wasteful number, since it uses less digits than its factorization.

20470422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487403.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 20470422 is about 4524.4250463457. The cubic root of 20470422 is about 273.5534933862.

Subtracting from 20470422 its sum of digits (21), we obtain a triangular number (20470401 = T₆₃₉₈).

Adding to 20470422 its reverse (22407402), we get a palindrome (42877824).

The spelling of 20470422 in words is "twenty million, four hundred seventy thousand, four hundred twenty-two".