15228416 has 60 divisors (see below), whose sum is σ = 35453088. Its totient is φ = 6515712.

The previous prime is 15228401. The next prime is 15228419. The reversal of 15228416 is 61482251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15228419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24785 + ... + 25391.

Almost surely, 2^15228416 is an apocalyptic number.

15228416 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 15228416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17726544).

15228416 is an abundant number, since it is smaller than the sum of its proper divisors (20224672).

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

15228416 is an frugal number, since it uses more digits than its factorization.

15228416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 616 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 15228416 is about 3902.3603114013. The cubic root of 15228416 is about 247.8667338115.

The spelling of 15228416 in words is "fifteen million, two hundred twenty-eight thousand, four hundred sixteen".