1515228 has 48 divisors (see below), whose sum is σ = 4158336. Its totient is φ = 423360.

The previous prime is 1515197. The next prime is 1515229. The reversal of 1515228 is 8225151.

It is a junction number, because it is equal to n+sod(n) for n = 1515198 and 1515207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1275 + ... + 2157.

It is an arithmetic number, because the mean of its divisors is an integer number (86632).

2^1515228 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 1515228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2079168).

1515228 is an abundant number, since it is smaller than the sum of its proper divisors (2643108).

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

1515228 is a wasteful number, since it uses less digits than its factorization.

1515228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 912 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 1515228 is about 1230.9459776936. The cubic root of 1515228 is about 114.8574920341.

The spelling of 1515228 in words is "one million, five hundred fifteen thousand, two hundred twenty-eight".