15428328 has 64 divisors (see below), whose sum is σ = 40435200. Its totient is φ = 4899840.

The previous prime is 15428321. The next prime is 15428339. The reversal of 15428328 is 82382451.

It is not an unprimeable number, because it can be changed into a prime (15428321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66100 + ... + 66332.

It is an arithmetic number, because the mean of its divisors is an integer number (631800).

Almost surely, 2^15428328 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 15428328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20217600).

15428328 is an abundant number, since it is smaller than the sum of its proper divisors (25006872).

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

15428328 is a wasteful number, since it uses less digits than its factorization.

15428328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 358 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 15428328 is about 3927.8910371852. The cubic root of 15428328 is about 248.9466507211.

It can be divided in two parts, 1542 and 8328, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 15428328 in words is "fifteen million, four hundred twenty-eight thousand, three hundred twenty-eight".