16525728 has 96 divisors (see below), whose sum is σ = 49835520. Its totient is φ = 5322240.

The previous prime is 16525727. The next prime is 16525741. The reversal of 16525728 is 82752561.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16525692 and 16525701.

It is not an unprimeable number, because it can be changed into a prime (16525727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26476 + ... + 27092.

It is an arithmetic number, because the mean of its divisors is an integer number (519120).

Almost surely, 2^16525728 is an apocalyptic number.

16525728 is a gapful number since it is divisible by the number (18) 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 16525728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24917760).

16525728 is an abundant number, since it is smaller than the sum of its proper divisors (33309792).

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

16525728 is a wasteful number, since it uses less digits than its factorization.

16525728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 653 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 16525728 is about 4065.1848666451. The cubic root of 16525728 is about 254.7144207784.

The spelling of 16525728 in words is "sixteen million, five hundred twenty-five thousand, seven hundred twenty-eight".