15450228 has 36 divisors (see below), whose sum is σ = 39180960. Its totient is φ = 5133456.

The previous prime is 15450221. The next prime is 15450233. The reversal of 15450228 is 82205451.

It is a happy number.

15450228 is a `hidden beast` number, since 154 + 502 + 2 + 8 = 666.

15450228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15450221) 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, 16353 + ... + 17271.

It is an arithmetic number, because the mean of its divisors is an integer number (1088360).

It is a vampire number, since it can be written as 2802 ⋅ 5514 (with its own digits).

Almost surely, 2^15450228 is an apocalyptic number.

15450228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

15450228 is an abundant number, since it is smaller than the sum of its proper divisors (23730732).

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

15450228 is a wasteful number, since it uses less digits than its factorization.

15450228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 15450228 is about 3930.6778041452. The cubic root of 15450228 is about 249.0643855370.

Adding to 15450228 its reverse (82205451), we get a palindrome (97655679).

The spelling of 15450228 in words is "fifteen million, four hundred fifty thousand, two hundred twenty-eight".