20420264226 has 16 divisors (see below), whose sum is σ = 40847984064. Its totient is φ = 6805512144.

The previous prime is 20420264201. The next prime is 20420264233. The reversal of 20420264226 is 62246202402.

It is a junction number, because it is equal to n+sod(n) for n = 20420264193 and 20420264202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274725 + ... + 341048.

It is an arithmetic number, because the mean of its divisors is an integer number (2552999004).

Almost surely, 2^20420264226 is an apocalyptic number.

20420264226 is an abundant number, since it is smaller than the sum of its proper divisors (20427719838).

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

20420264226 is a wasteful number, since it uses less digits than its factorization.

20420264226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621305.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 20420264226 its reverse (62246202402), we get a palindrome (82666466628).

The spelling of 20420264226 in words is "twenty billion, four hundred twenty million, two hundred sixty-four thousand, two hundred twenty-six".