16253420 has 12 divisors (see below), whose sum is σ = 34132224. Its totient is φ = 6501360.

The previous prime is 16253401. The next prime is 16253423. The reversal of 16253420 is 2435261.

It is not an unprimeable number, because it can be changed into a prime (16253423) 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 3 ways as a sum of consecutive naturals, for example, 406316 + ... + 406355.

It is an arithmetic number, because the mean of its divisors is an integer number (2844352).

Almost surely, 2^16253420 is an apocalyptic number.

16253420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16253420 is an abundant number, since it is smaller than the sum of its proper divisors (17878804).

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

16253420 is a wasteful number, since it uses less digits than its factorization.

16253420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812680 (or 812678 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 16253420 is about 4031.5530506245. The cubic root of 16253420 is about 253.3076189658.

Adding to 16253420 its reverse (2435261), we get a palindrome (18688681).

The spelling of 16253420 in words is "sixteen million, two hundred fifty-three thousand, four hundred twenty".