16016420 has 48 divisors (see below), whose sum is σ = 38683008. Its totient is φ = 5456640.

The previous prime is 16016401. The next prime is 16016423. The reversal of 16016420 is 2461061.

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 = 16016392 and 16016401.

It is not an unprimeable number, because it can be changed into a prime (16016423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32375 + ... + 32865.

It is an arithmetic number, because the mean of its divisors is an integer number (805896).

Almost surely, 2^16016420 is an apocalyptic number.

16016420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16016420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19341504).

16016420 is an abundant number, since it is smaller than the sum of its proper divisors (22666588).

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

16016420 is a wasteful number, since it uses less digits than its factorization.

16016420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740 (or 738 counting only the distinct ones).

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

The square root of 16016420 is about 4002.0519736755. The cubic root of 16016420 is about 252.0703801068.

Adding to 16016420 its reverse (2461061), we get a palindrome (18477481).

The spelling of 16016420 in words is "sixteen million, sixteen thousand, four hundred twenty".