16868436 has 24 divisors (see below), whose sum is σ = 42387744. Its totient is φ = 5190240.

The previous prime is 16868431. The next prime is 16868461. The reversal of 16868436 is 63486861.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 53910 + ... + 54221.

It is an arithmetic number, because the mean of its divisors is an integer number (1766156).

Almost surely, 2^16868436 is an apocalyptic number.

It is an amenable number.

16868436 is an abundant number, since it is smaller than the sum of its proper divisors (25519308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16868436 is a wasteful number, since it uses less digits than its factorization.

16868436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108151 (or 108149 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 16868436 is about 4107.1201589435. The cubic root of 16868436 is about 256.4631305563.

The spelling of 16868436 in words is "sixteen million, eight hundred sixty-eight thousand, four hundred thirty-six".