16766434 has 4 divisors (see below), whose sum is σ = 25149654. Its totient is φ = 8383216.

The previous prime is 16766429. The next prime is 16766459. The reversal of 16766434 is 43466761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15563025 + 1203409 = 3945^2 + 1097^2 .

It is a super-2 number, since 2×16766434² = 562226618152712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16766393 and 16766402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4191607 + ... + 4191610.

Almost surely, 2^16766434 is an apocalyptic number.

16766434 is a deficient number, since it is larger than the sum of its proper divisors (8383220).

16766434 is an equidigital number, since it uses as much as digits as its factorization.

16766434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8383219.

The product of its digits is 72576, while the sum is 37.

The square root of 16766434 is about 4094.6836263624. The cubic root of 16766434 is about 255.9451481601.

The spelling of 16766434 in words is "sixteen million, seven hundred sixty-six thousand, four hundred thirty-four".