16530072 has 32 divisors (see below), whose sum is σ = 44504880. Its totient is φ = 5086080.

The previous prime is 16530071. The next prime is 16530079. The reversal of 16530072 is 27003561.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16530071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26179 + ... + 26802.

Almost surely, 2^16530072 is an apocalyptic number.

16530072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16530072 is an abundant number, since it is smaller than the sum of its proper divisors (27974808).

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

16530072 is a wasteful number, since it uses less digits than its factorization.

16530072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53003 (or 52999 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 16530072 is about 4065.7191245830. The cubic root of 16530072 is about 254.7367371428.

The spelling of 16530072 in words is "sixteen million, five hundred thirty thousand, seventy-two".