15280216 has 48 divisors (see below), whose sum is σ = 34225200. Its totient is φ = 6257664.

The previous prime is 15280207. The next prime is 15280219. The reversal of 15280216 is 61208251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15280219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157480 + ... + 157576.

It is an arithmetic number, because the mean of its divisors is an integer number (713025).

Almost surely, 2^15280216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15280216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17112600).

15280216 is an abundant number, since it is smaller than the sum of its proper divisors (18944984).

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

15280216 is an equidigital number, since it uses as much as digits as its factorization.

15280216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 15280216 is about 3908.9916858443. The cubic root of 15280216 is about 248.1474582645.

Adding to 15280216 its reverse (61208251), we get a palindrome (76488467).

The spelling of 15280216 in words is "fifteen million, two hundred eighty thousand, two hundred sixteen".