1720501272 has 48 divisors (see below), whose sum is σ = 5325362640. Its totient is φ = 491571648.

The previous prime is 1720501267. The next prime is 1720501283. The reversal of 1720501272 is 2721050271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1706343 + ... + 1707350.

It is an arithmetic number, because the mean of its divisors is an integer number (110945055).

Almost surely, 2^1720501272 is an apocalyptic number.

1720501272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1720501272 is an abundant number, since it is smaller than the sum of its proper divisors (3604861368).

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

1720501272 is a wasteful number, since it uses less digits than its factorization.

1720501272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413712 (or 3413705 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 1720501272 is about 41478.9256370027. The cubic root of 1720501272 is about 1198.2616663795.

The spelling of 1720501272 in words is "one billion, seven hundred twenty million, five hundred one thousand, two hundred seventy-two".