16243920 has 240 divisors, whose sum is σ = 68245632. Its totient is φ = 3363840.

The previous prime is 16243919. The next prime is 16243921. The reversal of 16243920 is 2934261.

16243920 is a `hidden beast` number, since 1 + 624 + 39 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (16243919) and next prime (16243921).

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16243921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55294 + ... + 55586.

Almost surely, 2^16243920 is an apocalyptic number.

16243920 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 16243920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34122816).

16243920 is an abundant number, since it is smaller than the sum of its proper divisors (52001712).

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

16243920 is a wasteful number, since it uses less digits than its factorization.

16243920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 16243920 is about 4030.3746724095. The cubic root of 16243920 is about 253.2582572238.

The spelling of 16243920 in words is "sixteen million, two hundred forty-three thousand, nine hundred twenty".