16797520 has 80 divisors (see below), whose sum is σ = 42229440. Its totient is φ = 6193152.

The previous prime is 16797497. The next prime is 16797541. The reversal of 16797520 is 2579761.

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

It is a super-3 number, since 3×16797520³ (a number of 23 digits) contains 333 as substring.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 16797520.

It is a congruent number.

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, 65232 + ... + 65488.

It is an arithmetic number, because the mean of its divisors is an integer number (527868).

Almost surely, 2^16797520 is an apocalyptic number.

16797520 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 16797520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21114720).

16797520 is an abundant number, since it is smaller than the sum of its proper divisors (25431920).

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

16797520 is a wasteful number, since it uses less digits than its factorization.

16797520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 16797520 is about 4098.4777661956. The cubic root of 16797520 is about 256.1032298522.

The spelling of 16797520 in words is "sixteen million, seven hundred ninety-seven thousand, five hundred twenty".