16406426 has 4 divisors (see below), whose sum is σ = 24609642. Its totient is φ = 8203212.

The previous prime is 16406419. The next prime is 16406459. The reversal of 16406426 is 62460461.

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., 14432401 + 1974025 = 3799^2 + 1405^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4101605 + ... + 4101608.

Almost surely, 2^16406426 is an apocalyptic number.

16406426 is a deficient number, since it is larger than the sum of its proper divisors (8203216).

16406426 is an equidigital number, since it uses as much as digits as its factorization.

16406426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8203215.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 16406426 is about 4050.4846623583. The cubic root of 16406426 is about 254.0999978265.

Adding to 16406426 its reverse (62460461), we get a palindrome (78866887).

The spelling of 16406426 in words is "sixteen million, four hundred six thousand, four hundred twenty-six".