16452240 has 120 divisors (see below), whose sum is σ = 59371200. Its totient is φ = 3757824.

The previous prime is 16452239. The next prime is 16452253. The reversal of 16452240 is 4225461.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16452240.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11061 + ... + 12459.

It is an arithmetic number, because the mean of its divisors is an integer number (494760).

Almost surely, 2^16452240 is an apocalyptic number.

16452240 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 16452240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29685600).

16452240 is an abundant number, since it is smaller than the sum of its proper divisors (42918960).

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

16452240 is a wasteful number, since it uses less digits than its factorization.

16452240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 16452240 is about 4056.1360923914. The cubic root of 16452240 is about 254.3362978828.

The spelling of 16452240 in words is "sixteen million, four hundred fifty-two thousand, two hundred forty".