16868435 has 4 divisors (see below), whose sum is σ = 20242128. Its totient is φ = 13494744.

The previous prime is 16868431. The next prime is 16868461. The reversal of 16868435 is 53486861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53486861 = 2939 ⋅18199.

It is a cyclic number.

It is not a de Polignac number, because 16868435 - 2² = 16868431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16868392 and 16868401.

It is not an unprimeable number, because it can be changed into a prime (16868431) 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, 1686839 + ... + 1686848.

It is an arithmetic number, because the mean of its divisors is an integer number (5060532).

Almost surely, 2^16868435 is an apocalyptic number.

16868435 is a deficient number, since it is larger than the sum of its proper divisors (3373693).

16868435 is an equidigital number, since it uses as much as digits as its factorization.

16868435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373692.

The product of its digits is 138240, while the sum is 41.

The square root of 16868435 is about 4107.1200372037. The cubic root of 16868435 is about 256.4631254884.

The spelling of 16868435 in words is "sixteen million, eight hundred sixty-eight thousand, four hundred thirty-five".