16020239 has 4 divisors (see below), whose sum is σ = 16962624. Its totient is φ = 15077856.

The previous prime is 16020233. The next prime is 16020241. The reversal of 16020239 is 93202061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16020239 - 2¹⁶ = 15954703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16020233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471167 + ... + 471200.

It is an arithmetic number, because the mean of its divisors is an integer number (4240656).

Almost surely, 2^16020239 is an apocalyptic number.

16020239 is a deficient number, since it is larger than the sum of its proper divisors (942385).

16020239 is an equidigital number, since it uses as much as digits as its factorization.

16020239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942384.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 16020239 is about 4002.5290754722. The cubic root of 16020239 is about 252.0904133036.

The spelling of 16020239 in words is "sixteen million, twenty thousand, two hundred thirty-nine".