20061426 has 64 divisors (see below), whose sum is σ = 50512896. Its totient is φ = 5160000.

The previous prime is 20061409. The next prime is 20061427. The reversal of 20061426 is 62416002.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20061427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79801 + ... + 80051.

It is an arithmetic number, because the mean of its divisors is an integer number (789264).

Almost surely, 2^20061426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20061426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25256448).

20061426 is an abundant number, since it is smaller than the sum of its proper divisors (30451470).

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

20061426 is a wasteful number, since it uses less digits than its factorization.

20061426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20061426 is about 4478.9983255188. The cubic root of 20061426 is about 271.7193706738.

Adding to 20061426 its reverse (62416002), we get a palindrome (82477428).

The spelling of 20061426 in words is "twenty million, sixty-one thousand, four hundred twenty-six".