1720622436420 has 48 divisors (see below), whose sum is σ = 4817808471168. Its totient is φ = 458826397440.

The previous prime is 1720622436413. The next prime is 1720622436431. The reversal of 1720622436420 is 246342260271.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5729200 + ... + 6022040.

It is an arithmetic number, because the mean of its divisors is an integer number (100371009816).

Almost surely, 2^{1720622436420} is an apocalyptic number.

1720622436420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720622436420 is an abundant number, since it is smaller than the sum of its proper divisors (3097186034748).

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

1720622436420 is a wasteful number, since it uses less digits than its factorization.

1720622436420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390780 (or 390778 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

Adding to 1720622436420 its reverse (246342260271), we get a palindrome (1966964696691).

The spelling of 1720622436420 in words is "one trillion, seven hundred twenty billion, six hundred twenty-two million, four hundred thirty-six thousand, four hundred twenty".