20202426 has 64 divisors (see below), whose sum is σ = 48470400. Its totient is φ = 6213888.

The previous prime is 20202419. The next prime is 20202437. The reversal of 20202426 is 62420202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20202399 and 20202408.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53976 + ... + 54348.

It is an arithmetic number, because the mean of its divisors is an integer number (757350).

Almost surely, 2^20202426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20202426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24235200).

20202426 is an abundant number, since it is smaller than the sum of its proper divisors (28267974).

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

20202426 is a wasteful number, since it uses less digits than its factorization.

20202426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20202426 is about 4494.7108917037. The cubic root of 20202426 is about 272.3544704514.

Adding to 20202426 its reverse (62420202), we get a palindrome (82622628).

The spelling of 20202426 in words is "twenty million, two hundred two thousand, four hundred twenty-six".