16875220 has 24 divisors (see below), whose sum is σ = 37523304. Its totient is φ = 6352896.

The previous prime is 16875167. The next prime is 16875233. The reversal of 16875220 is 2257861.

It can be written as a sum of positive squares in 4 ways, for example, as 1774224 + 15100996 = 1332^2 + 3886^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24477 + ... + 25156.

It is an arithmetic number, because the mean of its divisors is an integer number (1563471).

Almost surely, 2^16875220 is an apocalyptic number.

16875220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16875220 is an abundant number, since it is smaller than the sum of its proper divisors (20648084).

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

16875220 is a wasteful number, since it uses less digits than its factorization.

16875220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49659 (or 49657 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 16875220 is about 4107.9459587487. The cubic root of 16875220 is about 256.4975066476.

The spelling of 16875220 in words is "sixteen million, eight hundred seventy-five thousand, two hundred twenty".