16827442 has 4 divisors (see below), whose sum is σ = 25241166. Its totient is φ = 8413720.

The previous prime is 16827427. The next prime is 16827443. The reversal of 16827442 is 24472861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24472861 = 7 ⋅3496123.

It can be written as a sum of positive squares in only one way, i.e., 8767521 + 8059921 = 2961^2 + 2839^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16827398 and 16827407.

It is not an unprimeable number, because it can be changed into a prime (16827443) 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 as a sum of consecutive naturals, namely, 4206859 + ... + 4206862.

Almost surely, 2^16827442 is an apocalyptic number.

16827442 is a deficient number, since it is larger than the sum of its proper divisors (8413724).

16827442 is an equidigital number, since it uses as much as digits as its factorization.

16827442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413723.

The product of its digits is 21504, while the sum is 34.

The square root of 16827442 is about 4102.1265216958. The cubic root of 16827442 is about 256.2552081432.

It can be divided in two parts, 1682 and 7442, that multiplied together give a square (12517444 = 3538²).

The spelling of 16827442 in words is "sixteen million, eight hundred twenty-seven thousand, four hundred forty-two".