916140228 has 12 divisors (see below), whose sum is σ = 2137660560. Its totient is φ = 305380072.

The previous prime is 916140227. The next prime is 916140289. The reversal of 916140228 is 822041619.

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

It is not an unprimeable number, because it can be changed into a prime (916140221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38172498 + ... + 38172521.

It is an arithmetic number, because the mean of its divisors is an integer number (178138380).

Almost surely, 2^916140228 is an apocalyptic number.

It is an amenable number.

916140228 is an abundant number, since it is smaller than the sum of its proper divisors (1221520332).

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

916140228 is a wasteful number, since it uses less digits than its factorization.

916140228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76345026 (or 76345024 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 916140228 is about 30267.8084439558. The cubic root of 916140228 is about 971.2267852050.

The spelling of 916140228 in words is "nine hundred sixteen million, one hundred forty thousand, two hundred twenty-eight".