16021069 has 8 divisors (see below), whose sum is σ = 16475360. Its totient is φ = 15570576.

The previous prime is 16021067. The next prime is 16021073. The reversal of 16021069 is 96012061.

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

It is a cyclic number.

It is not a de Polignac number, because 16021069 - 2¹ = 16021067 is a prime.

It is a super-2 number, since 2×16021069² = 513349303805522, 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 (16021063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9034 + ... + 10660.

It is an arithmetic number, because the mean of its divisors is an integer number (2059420).

Almost surely, 2^16021069 is an apocalyptic number.

It is an amenable number.

16021069 is a deficient number, since it is larger than the sum of its proper divisors (454291).

16021069 is a wasteful number, since it uses less digits than its factorization.

16021069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 16021069 is about 4002.6327585728. The cubic root of 16021069 is about 252.0947667848.

The spelling of 16021069 in words is "sixteen million, twenty-one thousand, sixty-nine".