16526489 has 12 divisors (see below), whose sum is σ = 19748736. Its totient is φ = 13546632.

The previous prime is 16526483. The next prime is 16526501. The reversal of 16526489 is 98462561.

16526489 = 237² + 238² + ... + 397².

It is a happy number.

It is not a de Polignac number, because 16526489 - 2⁴ = 16526473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16526483) 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 11 ways as a sum of consecutive naturals, for example, 1472 + ... + 5934.

It is an arithmetic number, because the mean of its divisors is an integer number (1645728).

Almost surely, 2^16526489 is an apocalyptic number.

It is an amenable number.

16526489 is a deficient number, since it is larger than the sum of its proper divisors (3222247).

16526489 is an equidigital number, since it uses as much as digits as its factorization.

16526489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516 (or 4493 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 16526489 is about 4065.2784652469. The cubic root of 16526489 is about 254.7183305345.

The spelling of 16526489 in words is "sixteen million, five hundred twenty-six thousand, four hundred eighty-nine".