53440228 has 24 divisors (see below), whose sum is σ = 96798240. Its totient is φ = 25798080.

The previous prime is 53440223. The next prime is 53440237. The reversal of 53440228 is 82204435.

It is a junction number, because it is equal to n+sod(n) for n = 53440196 and 53440205.

It is not an unprimeable number, because it can be changed into a prime (53440223) 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, 13563 + ... + 17053.

It is an arithmetic number, because the mean of its divisors is an integer number (4033260).

Almost surely, 2^53440228 is an apocalyptic number.

It is an amenable number.

53440228 is a deficient number, since it is larger than the sum of its proper divisors (43358012).

53440228 is a wasteful number, since it uses less digits than its factorization.

53440228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627 (or 3625 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 53440228 is about 7310.2823474884. The cubic root of 53440228 is about 376.6657230596.

The spelling of 53440228 in words is "fifty-three million, four hundred forty thousand, two hundred twenty-eight".