130665228 has 12 divisors (see below), whose sum is σ = 304885560. Its totient is φ = 43555072.

The previous prime is 130665211. The next prime is 130665263. The reversal of 130665228 is 822566031.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5444373 + ... + 5444396.

It is an arithmetic number, because the mean of its divisors is an integer number (25407130).

Almost surely, 2^130665228 is an apocalyptic number.

It is an amenable number.

130665228 is an abundant number, since it is smaller than the sum of its proper divisors (174220332).

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

130665228 is a wasteful number, since it uses less digits than its factorization.

130665228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888776 (or 10888774 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 130665228 is about 11430.8892042570. The cubic root of 130665228 is about 507.4423117065.

The spelling of 130665228 in words is "one hundred thirty million, six hundred sixty-five thousand, two hundred twenty-eight".