615228 has 24 divisors (see below), whose sum is σ = 1448832. Its totient is φ = 203184.

The previous prime is 615187. The next prime is 615229. The reversal of 615228 is 822516.

615228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 615198 and 615207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615229) by changing a digit.

615228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851 + ... + 2157.

It is an arithmetic number, because the mean of its divisors is an integer number (60368).

2⁶¹⁵²²⁸ is an apocalyptic number.

It is an amenable number.

615228 is an abundant number, since it is smaller than the sum of its proper divisors (833604).

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

615228 is a wasteful number, since it uses less digits than its factorization.

615228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 479 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 615228 is about 784.3647110879. The cubic root of 615228 is about 85.0508576844.

The spelling of 615228 in words is "six hundred fifteen thousand, two hundred twenty-eight".