16440435 has 32 divisors (see below), whose sum is σ = 31887360. Its totient is φ = 7970400.

The previous prime is 16440407. The next prime is 16440481. The reversal of 16440435 is 53404461.

It is not a de Polignac number, because 16440435 - 2⁹ = 16439923 is a prime.

It is a super-3 number, since 3×16440435³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 16440399 and 16440408.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4051 + ... + 7020.

It is an arithmetic number, because the mean of its divisors is an integer number (996480).

Almost surely, 2^16440435 is an apocalyptic number.

16440435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16440435 is a deficient number, since it is larger than the sum of its proper divisors (15446925).

16440435 is a wasteful number, since it uses less digits than its factorization.

16440435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11096 (or 11090 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 16440435 is about 4054.6806286069. The cubic root of 16440435 is about 254.2754518947.

Adding to 16440435 its reverse (53404461), we get a palindrome (69844896).

The spelling of 16440435 in words is "sixteen million, four hundred forty thousand, four hundred thirty-five".