1720072032 has 48 divisors (see below), whose sum is σ = 5160218112. Its totient is φ = 491448960.

The previous prime is 1720072027. The next prime is 1720072073. The reversal of 1720072032 is 2302700271.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1720071993 and 1720072011.

It is a congruent number.

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, 1279144 + ... + 1280487.

It is an arithmetic number, because the mean of its divisors is an integer number (107504544).

Almost surely, 2^1720072032 is an apocalyptic number.

1720072032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1720072032 is an abundant number, since it is smaller than the sum of its proper divisors (3440146080).

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

1720072032 is a wasteful number, since it uses less digits than its factorization.

1720072032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559651 (or 2559643 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 1720072032 is about 41473.7511204376. The cubic root of 1720072032 is about 1198.1620084822.

The spelling of 1720072032 in words is "one billion, seven hundred twenty million, seventy-two thousand, thirty-two".