16275520 has 56 divisors (see below), whose sum is σ = 39108888. Its totient is φ = 6451200.

The previous prime is 16275509. The next prime is 16275521. The reversal of 16275520 is 2557261.

It can be written as a sum of positive squares in 4 ways, for example, as 82944 + 16192576 = 288^2 + 4024^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16275521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57780 + ... + 58060.

It is an arithmetic number, because the mean of its divisors is an integer number (698373).

Almost surely, 2^16275520 is an apocalyptic number.

16275520 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 16275520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19554444).

16275520 is an abundant number, since it is smaller than the sum of its proper divisors (22833368).

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

16275520 is a wasteful number, since it uses less digits than its factorization.

16275520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 16275520 is about 4034.2929987793. The cubic root of 16275520 is about 253.4223755940.

The spelling of 16275520 in words is "sixteen million, two hundred seventy-five thousand, five hundred twenty".