16528240 has 20 divisors (see below), whose sum is σ = 38428344. Its totient is φ = 6611264.

The previous prime is 16528229. The next prime is 16528243. The reversal of 16528240 is 4282561.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 16528199 and 16528208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16528243) 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 3 ways as a sum of consecutive naturals, for example, 103222 + ... + 103381.

Almost surely, 2^16528240 is an apocalyptic number.

16528240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16528240 is an abundant number, since it is smaller than the sum of its proper divisors (21900104).

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

16528240 is a wasteful number, since it uses less digits than its factorization.

16528240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206616 (or 206610 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 16528240 is about 4065.4938199436. The cubic root of 16528240 is about 254.7273261142.

The spelling of 16528240 in words is "sixteen million, five hundred twenty-eight thousand, two hundred forty".