16218426 has 16 divisors (see below), whose sum is σ = 37070784. Its totient is φ = 4633824.

The previous prime is 16218409. The next prime is 16218481. The reversal of 16218426 is 62481261.

It is a junction number, because it is equal to n+sod(n) for n = 16218393 and 16218402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193035 + ... + 193118.

It is an arithmetic number, because the mean of its divisors is an integer number (2316924).

Almost surely, 2^16218426 is an apocalyptic number.

16218426 is an abundant number, since it is smaller than the sum of its proper divisors (20852358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16218426 is a wasteful number, since it uses less digits than its factorization.

16218426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386165.

The product of its digits is 4608, while the sum is 30.

The square root of 16218426 is about 4027.2106972444. The cubic root of 16218426 is about 253.1256958981.

Adding to 16218426 its reverse (62481261), we get a palindrome (78699687).

The spelling of 16218426 in words is "sixteen million, two hundred eighteen thousand, four hundred twenty-six".