15228528 has 80 divisors (see below), whose sum is σ = 45758976. Its totient is φ = 4273920.

The previous prime is 15228511. The next prime is 15228547. The reversal of 15228528 is 82582251.

15228528 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20125 + ... + 20867.

Almost surely, 2^15228528 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 15228528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22879488).

15228528 is an abundant number, since it is smaller than the sum of its proper divisors (30530448).

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

15228528 is a wasteful number, since it uses less digits than its factorization.

15228528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 816 counting only the distinct ones).

The product of its digits is 12800, while the sum is 33.

The square root of 15228528 is about 3902.3746616644. The cubic root of 15228528 is about 247.8673414694.

It can be divided in two parts, 152 and 28528, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 15228528 in words is "fifteen million, two hundred twenty-eight thousand, five hundred twenty-eight".