16253820 has 72 divisors (see below), whose sum is σ = 53791920. Its totient is φ = 3939840.

The previous prime is 16253813. The next prime is 16253821. The reversal of 16253820 is 2835261.

16253820 is a `hidden beast` number, since 1 + 625 + 38 + 2 + 0 = 666.

16253820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16253821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2125 + ... + 6084.

It is an arithmetic number, because the mean of its divisors is an integer number (747110).

Almost surely, 2^16253820 is an apocalyptic number.

16253820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16253820 is an abundant number, since it is smaller than the sum of its proper divisors (37538100).

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

16253820 is a wasteful number, since it uses less digits than its factorization.

16253820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8235 (or 8230 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16253820 is about 4031.6026589931. The cubic root of 16253820 is about 253.3096969330.

It can be divided in two parts, 1625 and 3820, that added together give a palindrome (5445).

The spelling of 16253820 in words is "sixteen million, two hundred fifty-three thousand, eight hundred twenty".