1720426227 has 8 divisors (see below), whose sum is σ = 2470355664. Its totient is φ = 1058723808.

The previous prime is 1720426219. The next prime is 1720426229. The reversal of 1720426227 is 7226240271.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1720426227 - 2³ = 1720426219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1720426229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22056708 + ... + 22056785.

It is an arithmetic number, because the mean of its divisors is an integer number (308794458).

Almost surely, 2^1720426227 is an apocalyptic number.

1720426227 is a deficient number, since it is larger than the sum of its proper divisors (749929437).

1720426227 is a wasteful number, since it uses less digits than its factorization.

1720426227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44113509.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 1720426227 is about 41478.0210111331. The cubic root of 1720426227 is about 1198.2442441596.

Adding to 1720426227 its reverse (7226240271), we get a palindrome (8946666498).

The spelling of 1720426227 in words is "one billion, seven hundred twenty million, four hundred twenty-six thousand, two hundred twenty-seven".