505194228 has 144 divisors (see below), whose sum is σ = 1643765760. Its totient is φ = 126964800.

The previous prime is 505194227. The next prime is 505194233. The reversal of 505194228 is 822491505.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 505194192 and 505194201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505194227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82993 + ... + 88871.

It is an arithmetic number, because the mean of its divisors is an integer number (11415040).

Almost surely, 2^505194228 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 505194228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821882880).

505194228 is an abundant number, since it is smaller than the sum of its proper divisors (1138571532).

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

505194228 is a wasteful number, since it uses less digits than its factorization.

505194228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938 (or 5933 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 505194228 is about 22476.5261550801. The cubic root of 505194228 is about 796.4395041790.

The spelling of 505194228 in words is "five hundred five million, one hundred ninety-four thousand, two hundred twenty-eight".