16120720 has 80 divisors (see below), whose sum is σ = 46747008. Its totient is φ = 5022720.

The previous prime is 16120697. The next prime is 16120733. The reversal of 16120720 is 2702161.

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

It is a super-2 number, since 2×16120720² = 519755226636800, which contains 22 as substring.

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, 4852 + ... + 7468.

Almost surely, 2^16120720 is an apocalyptic number.

16120720 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 16120720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23373504).

16120720 is an abundant number, since it is smaller than the sum of its proper divisors (30626288).

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

16120720 is a wasteful number, since it uses less digits than its factorization.

16120720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648 (or 2642 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 16120720 is about 4015.0616433624. The cubic root of 16120720 is about 252.6163630577.

Adding to 16120720 its reverse (2702161), we get a palindrome (18822881).

The spelling of 16120720 in words is "sixteen million, one hundred twenty thousand, seven hundred twenty".