52784388 has 36 divisors (see below), whose sum is σ = 141277500. Its totient is φ = 16559616.

The previous prime is 52784383. The next prime is 52784399. The reversal of 52784388 is 88348725.

52784388 is a `hidden beast` number, since 527 + 8 + 43 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47775744 + 5008644 = 6912^2 + 2238^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (52784383) 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 11 ways as a sum of consecutive naturals, for example, 42513 + ... + 43736.

It is an arithmetic number, because the mean of its divisors is an integer number (3924375).

Almost surely, 2^52784388 is an apocalyptic number.

It is an amenable number.

52784388 is an abundant number, since it is smaller than the sum of its proper divisors (88493112).

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

52784388 is a wasteful number, since it uses less digits than its factorization.

52784388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86276 (or 86271 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 52784388 is about 7265.2865050182. The cubic root of 52784388 is about 375.1185118759.

The spelling of 52784388 in words is "fifty-two million, seven hundred eighty-four thousand, three hundred eighty-eight".