16744457 has 4 divisors (see below), whose sum is σ = 16828800. Its totient is φ = 16660116.

The previous prime is 16744451. The next prime is 16744459. The reversal of 16744457 is 75444761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16744457 - 2¹⁴ = 16728073 is a prime.

It is a super-4 number, since 4×16744457⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 16744457.

It is not an unprimeable number, because it can be changed into a prime (16744451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41873 + ... + 42270.

It is an arithmetic number, because the mean of its divisors is an integer number (4207200).

Almost surely, 2^16744457 is an apocalyptic number.

It is an amenable number.

16744457 is a deficient number, since it is larger than the sum of its proper divisors (84343).

16744457 is an equidigital number, since it uses as much as digits as its factorization.

16744457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84342.

The product of its digits is 94080, while the sum is 38.

The square root of 16744457 is about 4091.9991446724. Note that the first 3 decimals coincide. The cubic root of 16744457 is about 255.8332705446.

The spelling of 16744457 in words is "sixteen million, seven hundred forty-four thousand, four hundred fifty-seven".