16528690 has 8 divisors (see below), whose sum is σ = 29751660. Its totient is φ = 6611472.

The previous prime is 16528661. The next prime is 16528691. The reversal of 16528690 is 9682561.

It can be written as a sum of positive squares in 2 ways, for example, as 14160169 + 2368521 = 3763^2 + 1539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16528690² = 546395186232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16528691) 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, 826425 + ... + 826444.

Almost surely, 2^16528690 is an apocalyptic number.

16528690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16528690 is a deficient number, since it is larger than the sum of its proper divisors (13222970).

16528690 is a wasteful number, since it uses less digits than its factorization.

16528690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652876.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 16528690 is about 4065.5491633972. The cubic root of 16528690 is about 254.7296378396.

It can be divided in two parts, 1 and 6528690, that added together give a triangular number (6528691 = T₃₆₁₃).

The spelling of 16528690 in words is "sixteen million, five hundred twenty-eight thousand, six hundred ninety".