16356946 has 4 divisors (see below), whose sum is σ = 24535422. Its totient is φ = 8178472.

The previous prime is 16356877. The next prime is 16356947. The reversal of 16356946 is 64965361.

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., 15171025 + 1185921 = 3895^2 + 1089^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16356899 and 16356908.

It is not an unprimeable number, because it can be changed into a prime (16356947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4089235 + ... + 4089238.

Almost surely, 2^16356946 is an apocalyptic number.

16356946 is a deficient number, since it is larger than the sum of its proper divisors (8178476).

16356946 is an equidigital number, since it uses as much as digits as its factorization.

16356946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8178475.

The product of its digits is 116640, while the sum is 40.

The square root of 16356946 is about 4044.3721391583. The cubic root of 16356946 is about 253.8442945921.

The spelling of 16356946 in words is "sixteen million, three hundred fifty-six thousand, nine hundred forty-six".