53640228 has 48 divisors (see below), whose sum is σ = 128436224. Its totient is φ = 17418240.

The previous prime is 53640193. The next prime is 53640271. The reversal of 53640228 is 82204635.

It is a junction number, because it is equal to n+sod(n) for n = 53640195 and 53640204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92676 + ... + 93252.

Almost surely, 2^53640228 is an apocalyptic number.

It is an amenable number.

53640228 is an abundant number, since it is smaller than the sum of its proper divisors (74795996).

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

53640228 is a wasteful number, since it uses less digits than its factorization.

53640228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 53640228 is about 7323.9489348302. The cubic root of 53640228 is about 377.1350284516.

The spelling of 53640228 in words is "fifty-three million, six hundred forty thousand, two hundred twenty-eight".