52188668 has 48 divisors (see below), whose sum is σ = 110584320. Its totient is φ = 21052224.

The previous prime is 52188667. The next prime is 52188671. The reversal of 52188668 is 86688125.

It is a super-2 number, since 2×52188668² = 5447314135228448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52188667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139730 + ... + 140102.

It is an arithmetic number, because the mean of its divisors is an integer number (2303840).

Almost surely, 2^52188668 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 52188668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55292160).

52188668 is an abundant number, since it is smaller than the sum of its proper divisors (58395652).

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

52188668 is a wasteful number, since it uses less digits than its factorization.

52188668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 664 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 52188668 is about 7224.1724785611. The cubic root of 52188668 is about 373.7019845627.

The spelling of 52188668 in words is "fifty-two million, one hundred eighty-eight thousand, six hundred sixty-eight".