134520228 has 72 divisors (see below), whose sum is σ = 360141600. Its totient is φ = 42218496.

The previous prime is 134520227. The next prime is 134520229. The reversal of 134520228 is 822025431.

134520228 is a `hidden beast` number, since 134 + 520 + 2 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (134520227) and next prime (134520229).

It is not an unprimeable number, because it can be changed into a prime (134520227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131503 + ... + 132521.

Almost surely, 2^134520228 is an apocalyptic number.

134520228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134520228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180070800).

134520228 is an abundant number, since it is smaller than the sum of its proper divisors (225621372).

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

134520228 is a wasteful number, since it uses less digits than its factorization.

134520228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 134520228 is about 11598.2855629615. The cubic root of 134520228 is about 512.3843600285.

Adding to 134520228 its reverse (822025431), we get a palindrome (956545659).

The spelling of 134520228 in words is "one hundred thirty-four million, five hundred twenty thousand, two hundred twenty-eight".