16406120 has 32 divisors (see below), whose sum is σ = 38858400. Its totient is φ = 6216768.

The previous prime is 16406119. The next prime is 16406123. The reversal of 16406120 is 2160461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 16406092 and 16406101.

It is not an unprimeable number, because it can be changed into a prime (16406123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10034 + ... + 11553.

It is an arithmetic number, because the mean of its divisors is an integer number (1214325).

Almost surely, 2^16406120 is an apocalyptic number.

16406120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16406120 is an abundant number, since it is smaller than the sum of its proper divisors (22452280).

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

16406120 is a wasteful number, since it uses less digits than its factorization.

16406120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21617 (or 21613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 16406120 is about 4050.4468889247. The cubic root of 16406120 is about 254.0984180577.

Adding to 16406120 its reverse (2160461), we get a palindrome (18566581).

The spelling of 16406120 in words is "sixteen million, four hundred six thousand, one hundred twenty".