1797932720 has 80 divisors (see below), whose sum is σ = 4376907360. Its totient is φ = 685934592.

The previous prime is 1797932707. The next prime is 1797932723. The reversal of 1797932720 is 272397971.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1797932723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187892 + ... + 197228.

It is an arithmetic number, because the mean of its divisors is an integer number (54711342).

Almost surely, 2^1797932720 is an apocalyptic number.

1797932720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1797932720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2188453680).

1797932720 is an abundant number, since it is smaller than the sum of its proper divisors (2578974640).

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

1797932720 is a wasteful number, since it uses less digits than its factorization.

1797932720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9462 (or 9456 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 1797932720 is about 42402.0367435339. The cubic root of 1797932720 is about 1215.9745312937.

The spelling of 1797932720 in words is "one billion, seven hundred ninety-seven million, nine hundred thirty-two thousand, seven hundred twenty".