15361216 has 56 divisors (see below), whose sum is σ = 33782000. Its totient is φ = 6884352.

The previous prime is 15361207. The next prime is 15361219. The reversal of 15361216 is 61216351.

It is not an unprimeable number, because it can be changed into a prime (15361219) 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, 30535 + ... + 31033.

It is an arithmetic number, because the mean of its divisors is an integer number (603250).

Almost surely, 2^15361216 is an apocalyptic number.

15361216 is a gapful number since it is divisible by the number (16) 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 15361216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16891000).

15361216 is an abundant number, since it is smaller than the sum of its proper divisors (18420784).

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

15361216 is a wasteful number, since it uses less digits than its factorization.

15361216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 551 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 15361216 is about 3919.3387197332. The cubic root of 15361216 is about 248.5851600163.

Adding to 15361216 its reverse (61216351), we get a palindrome (76577567).

The spelling of 15361216 in words is "fifteen million, three hundred sixty-one thousand, two hundred sixteen".