16236139 has 8 divisors (see below), whose sum is σ = 17269200. Its totient is φ = 15211776.

The previous prime is 16236131. The next prime is 16236161. The reversal of 16236139 is 93163261.

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 16236139 - 2³ = 16236131 is a prime.

It is a super-2 number, since 2×16236139² = 527224419254642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16236139.

It is not an unprimeable number, because it can be changed into a prime (16236131) 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, 1912 + ... + 6010.

It is an arithmetic number, because the mean of its divisors is an integer number (2158650).

Almost surely, 2^16236139 is an apocalyptic number.

16236139 is a deficient number, since it is larger than the sum of its proper divisors (1033061).

16236139 is a wasteful number, since it uses less digits than its factorization.

16236139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349.

The product of its digits is 5832, while the sum is 31.

The square root of 16236139 is about 4029.4092619142. The cubic root of 16236139 is about 253.2178130200.

The spelling of 16236139 in words is "sixteen million, two hundred thirty-six thousand, one hundred thirty-nine".