52669638 has 96 divisors (see below), whose sum is σ = 140534784. Its totient is φ = 13913856.

The previous prime is 52669637. The next prime is 52669649. The reversal of 52669638 is 83696625.

It is a happy number.

52669638 is a `hidden beast` number, since 5 + 2 + 6 + 6 + 9 + 638 = 666.

52669638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 52669593 and 52669602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52669637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143331 + ... + 143697.

It is an arithmetic number, because the mean of its divisors is an integer number (1463904).

Almost surely, 2^52669638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52669638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70267392).

52669638 is an abundant number, since it is smaller than the sum of its proper divisors (87865146).

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

52669638 is a wasteful number, since it uses less digits than its factorization.

52669638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 463 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 52669638 is about 7257.3850662618. The cubic root of 52669638 is about 374.8464864982.

The spelling of 52669638 in words is "fifty-two million, six hundred sixty-nine thousand, six hundred thirty-eight".