52649028 has 60 divisors (see below), whose sum is σ = 140873040. Its totient is φ = 17137008.

The previous prime is 52649021. The next prime is 52649053. The reversal of 52649028 is 82094625.

It is a happy number.

52649028 is a `hidden beast` number, since 5 + 2 + 649 + 0 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52648983 and 52649001.

It is not an unprimeable number, because it can be changed into a prime (52649021) 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 19 ways as a sum of consecutive naturals, for example, 12043 + ... + 15821.

It is an arithmetic number, because the mean of its divisors is an integer number (2347884).

Almost surely, 2^52649028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52649028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70436520).

52649028 is an abundant number, since it is smaller than the sum of its proper divisors (88224012).

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

52649028 is a wasteful number, since it uses less digits than its factorization.

52649028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838 (or 3827 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 52649028 is about 7255.9649944029. The cubic root of 52649028 is about 374.7975867633.

The spelling of 52649028 in words is "fifty-two million, six hundred forty-nine thousand, twenty-eight".