16136420 has 12 divisors (see below), whose sum is σ = 33886524. Its totient is φ = 6454560.

The previous prime is 16136413. The next prime is 16136423. The reversal of 16136420 is 2463161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3118756 + 13017664 = 1766^2 + 3608^2 .

It is not an unprimeable number, because it can be changed into a prime (16136423) 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 3 ways as a sum of consecutive naturals, for example, 403391 + ... + 403430.

It is an arithmetic number, because the mean of its divisors is an integer number (2823877).

Almost surely, 2^16136420 is an apocalyptic number.

16136420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16136420 is an abundant number, since it is smaller than the sum of its proper divisors (17750104).

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

16136420 is a wasteful number, since it uses less digits than its factorization.

16136420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806830 (or 806828 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 16136420 is about 4017.0163056677. The cubic root of 16136420 is about 252.6983443024.

Adding to 16136420 its reverse (2463161), we get a palindrome (18599581).

The spelling of 16136420 in words is "sixteen million, one hundred thirty-six thousand, four hundred twenty".