16919424 has 96 divisors (see below), whose sum is σ = 51316200. Its totient is φ = 5336064.

The previous prime is 16919423. The next prime is 16919447. The reversal of 16919424 is 42491961.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16919423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21502 + ... + 22274.

Almost surely, 2^16919424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16919424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25658100).

16919424 is an abundant number, since it is smaller than the sum of its proper divisors (34396776).

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

16919424 is a wasteful number, since it uses less digits than its factorization.

16919424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 797 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 16919424 is about 4113.3227444488. The cubic root of 16919424 is about 256.7212732150.

The spelling of 16919424 in words is "sixteen million, nine hundred nineteen thousand, four hundred twenty-four".