16388426 has 4 divisors (see below), whose sum is σ = 24582642. Its totient is φ = 8194212.

The previous prime is 16388419. The next prime is 16388467. The reversal of 16388426 is 62488361.

It is a happy number.

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., 9891025 + 6497401 = 3145^2 + 2549^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16388426.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4097105 + ... + 4097108.

Almost surely, 2^16388426 is an apocalyptic number.

16388426 is a deficient number, since it is larger than the sum of its proper divisors (8194216).

16388426 is an equidigital number, since it uses as much as digits as its factorization.

16388426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8194215.

The product of its digits is 55296, while the sum is 38.

The square root of 16388426 is about 4048.2620962581. The cubic root of 16388426 is about 254.0070368191.

The spelling of 16388426 in words is "sixteen million, three hundred eighty-eight thousand, four hundred twenty-six".