52390632 has 64 divisors (see below), whose sum is σ = 151113600. Its totient is φ = 14826240.

The previous prime is 52390627. The next prime is 52390673. The reversal of 52390632 is 23609325.

It is a self number, because there is not a number n which added to its sum of digits gives 52390632.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16882 + ... + 19742.

It is an arithmetic number, because the mean of its divisors is an integer number (2361150).

Almost surely, 2^52390632 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 52390632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75556800).

52390632 is an abundant number, since it is smaller than the sum of its proper divisors (98722968).

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

52390632 is a wasteful number, since it uses less digits than its factorization.

52390632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2982 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 52390632 is about 7238.1373294515. The cubic root of 52390632 is about 374.1834249489.

Adding to 52390632 its reverse (23609325), we get a palindrome (75999957).

The spelling of 52390632 in words is "fifty-two million, three hundred ninety thousand, six hundred thirty-two".