16789457 has 8 divisors (see below), whose sum is σ = 17130600. Its totient is φ = 16450560.

The previous prime is 16789417. The next prime is 16789501. The reversal of 16789457 is 75498761.

It can be written as a sum of positive squares in 4 ways, for example, as 781456 + 16008001 = 884^2 + 4001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16789457 - 2¹⁰ = 16788433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16789417) 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, 27083 + ... + 27695.

It is an arithmetic number, because the mean of its divisors is an integer number (2141325).

Almost surely, 2^16789457 is an apocalyptic number.

It is an amenable number.

16789457 is a deficient number, since it is larger than the sum of its proper divisors (341143).

16789457 is an equidigital number, since it uses as much as digits as its factorization.

16789457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123.

The product of its digits is 423360, while the sum is 47.

The square root of 16789457 is about 4097.4939902335. The cubic root of 16789457 is about 256.0622458095.

The spelling of 16789457 in words is "sixteen million, seven hundred eighty-nine thousand, four hundred fifty-seven".