52642668 has 24 divisors (see below), whose sum is σ = 132281968. Its totient is φ = 16197696.

The previous prime is 52642663. The next prime is 52642687. The reversal of 52642668 is 86624625.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (52642663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168571 + ... + 168882.

Almost surely, 2^52642668 is an apocalyptic number.

It is an amenable number.

52642668 is an abundant number, since it is smaller than the sum of its proper divisors (79639300).

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

52642668 is a wasteful number, since it uses less digits than its factorization.

52642668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337473 (or 337471 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 52642668 is about 7255.5267210589. The cubic root of 52642668 is about 374.7824943122.

The spelling of 52642668 in words is "fifty-two million, six hundred forty-two thousand, six hundred sixty-eight".