16440135 has 16 divisors (see below), whose sum is σ = 26373600. Its totient is φ = 8744960.

The previous prime is 16440133. The next prime is 16440161. The reversal of 16440135 is 53104461.

It is not a de Polignac number, because 16440135 - 2¹ = 16440133 is a prime.

It is a super-3 number, since 3×16440135³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16440131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5515 + ... + 7955.

It is an arithmetic number, because the mean of its divisors is an integer number (1648350).

Almost surely, 2^16440135 is an apocalyptic number.

16440135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16440135 is a deficient number, since it is larger than the sum of its proper divisors (9933465).

16440135 is a wasteful number, since it uses less digits than its factorization.

16440135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 16440135 is about 4054.6436341558. The cubic root of 16440135 is about 254.2739052385.

Adding to 16440135 its reverse (53104461), we get a palindrome (69544596).

The spelling of 16440135 in words is "sixteen million, four hundred forty thousand, one hundred thirty-five".