16213420 has 12 divisors (see below), whose sum is σ = 34048224. Its totient is φ = 6485360.

The previous prime is 16213411. The next prime is 16213433. The reversal of 16213420 is 2431261.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405316 + ... + 405355.

It is an arithmetic number, because the mean of its divisors is an integer number (2837352).

Almost surely, 2^16213420 is an apocalyptic number.

16213420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16213420 is an abundant number, since it is smaller than the sum of its proper divisors (17834804).

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

16213420 is a wasteful number, since it uses less digits than its factorization.

16213420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810680 (or 810678 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 16213420 is about 4026.5891272888. The cubic root of 16213420 is about 253.0996498517.

Adding to 16213420 its reverse (2431261), we get a palindrome (18644681).

It can be divided in two parts, 1621 and 3420, that added together give a square (5041 = 71²).

The spelling of 16213420 in words is "sixteen million, two hundred thirteen thousand, four hundred twenty".