16805424 has 40 divisors (see below), whose sum is σ = 45701440. Its totient is φ = 5306688.

The previous prime is 16805419. The next prime is 16805429. The reversal of 16805424 is 42450861.

It is an interprime number because it is at equal distance from previous prime (16805419) and next prime (16805429).

It is a junction number, because it is equal to n+sod(n) for n = 16805391 and 16805400.

It is not an unprimeable number, because it can be changed into a prime (16805429) 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, 8302 + ... + 10125.

It is an arithmetic number, because the mean of its divisors is an integer number (1142536).

Almost surely, 2^16805424 is an apocalyptic number.

It is an amenable number.

16805424 is an abundant number, since it is smaller than the sum of its proper divisors (28896016).

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

16805424 is a wasteful number, since it uses less digits than its factorization.

16805424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18457 (or 18451 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 16805424 is about 4099.4419132365. The cubic root of 16805424 is about 256.1433929738.

The spelling of 16805424 in words is "sixteen million, eight hundred five thousand, four hundred twenty-four".