16020647 has 12 divisors (see below), whose sum is σ = 17294256. Its totient is φ = 14788800.

The previous prime is 16020637. The next prime is 16020649. The reversal of 16020647 is 74602061.

It is not a de Polignac number, because 16020647 - 2¹⁸ = 15758503 is a prime.

It is a super-2 number, since 2×16020647² = 513322260597218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16020649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106022 + ... + 106172.

It is an arithmetic number, because the mean of its divisors is an integer number (1441188).

Almost surely, 2^16020647 is an apocalyptic number.

16020647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16020647 is a deficient number, since it is larger than the sum of its proper divisors (1273609).

16020647 is an equidigital number, since it uses as much as digits as its factorization.

16020647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 16020647 is about 4002.5800429223. The cubic root of 16020647 is about 252.0925533469.

The spelling of 16020647 in words is "sixteen million, twenty thousand, six hundred forty-seven".