1723045420 has 24 divisors (see below), whose sum is σ = 3620991024. Its totient is φ = 688723776.

The previous prime is 1723045417. The next prime is 1723045433. The reversal of 1723045420 is 245403271.

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, 1647 + ... + 58726.

It is an arithmetic number, because the mean of its divisors is an integer number (150874626).

Almost surely, 2^1723045420 is an apocalyptic number.

1723045420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1723045420 is an abundant number, since it is smaller than the sum of its proper divisors (1897945604).

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

1723045420 is a wasteful number, since it uses less digits than its factorization.

1723045420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61809 (or 61807 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 1723045420 is about 41509.5822672308. The cubic root of 1723045420 is about 1198.8520085948.

Adding to 1723045420 its reverse (245403271), we get a palindrome (1968448691).

The spelling of 1723045420 in words is "one billion, seven hundred twenty-three million, forty-five thousand, four hundred twenty".