52713228 has 12 divisors (see below), whose sum is σ = 122997560. Its totient is φ = 17571072.

The previous prime is 52713223. The next prime is 52713247. The reversal of 52713228 is 82231725.

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

It is a junction number, because it is equal to n+sod(n) for n = 52713195 and 52713204.

It is not an unprimeable number, because it can be changed into a prime (52713223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2196373 + ... + 2196396.

Almost surely, 2^52713228 is an apocalyptic number.

It is an amenable number.

52713228 is an abundant number, since it is smaller than the sum of its proper divisors (70284332).

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

52713228 is a wasteful number, since it uses less digits than its factorization.

52713228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392776 (or 4392774 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 52713228 is about 7260.3875929595. The cubic root of 52713228 is about 374.9498670759.

The spelling of 52713228 in words is "fifty-two million, seven hundred thirteen thousand, two hundred twenty-eight".