16302420 has 108 divisors (see below), whose sum is σ = 51757524. Its totient is φ = 4151040.

The previous prime is 16302401. The next prime is 16302421. The reversal of 16302420 is 2420361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2862864 + 13439556 = 1692^2 + 3666^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 16302393 and 16302402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16302421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 346837 + ... + 346883.

Almost surely, 2^16302420 is an apocalyptic number.

16302420 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 16302420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25878762).

16302420 is an abundant number, since it is smaller than the sum of its proper divisors (35455104).

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

16302420 is a wasteful number, since it uses less digits than its factorization.

16302420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 16302420 is about 4037.6255398439. The cubic root of 16302420 is about 253.5619166476.

Adding to 16302420 its reverse (2420361), we get a palindrome (18722781).

The spelling of 16302420 in words is "sixteen million, three hundred two thousand, four hundred twenty".