65630028 has 24 divisors (see below), whose sum is σ = 161197120. Its totient is φ = 20725200.

The previous prime is 65630023. The next prime is 65630077. The reversal of 65630028 is 82003656.

It is a junction number, because it is equal to n+sod(n) for n = 65629977 and 65630004.

It is not an unprimeable number, because it can be changed into a prime (65630021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143698 + ... + 144153.

Almost surely, 2^65630028 is an apocalyptic number.

It is an amenable number.

65630028 is an abundant number, since it is smaller than the sum of its proper divisors (95567092).

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

65630028 is a wasteful number, since it uses less digits than its factorization.

65630028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287877 (or 287875 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 65630028 is about 8101.2362019633. The cubic root of 65630028 is about 403.3674626008.

The spelling of 65630028 in words is "sixty-five million, six hundred thirty thousand, twenty-eight".