52666768 has 120 divisors (see below), whose sum is σ = 134348544. Its totient is φ = 19756800.

The previous prime is 52666759. The next prime is 52666793. The reversal of 52666768 is 86766625.

52666768 = 1⁹ + 2⁹ + ... + 7⁹.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267246 + ... + 267442.

Almost surely, 2^52666768 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 52666768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67174272).

52666768 is an abundant number, since it is smaller than the sum of its proper divisors (81681776).

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

52666768 is a wasteful number, since it uses less digits than its factorization.

52666768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 248 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 52666768 is about 7257.1873339469. The cubic root of 52666768 is about 374.8396778383.

The spelling of 52666768 in words is "fifty-two million, six hundred sixty-six thousand, seven hundred sixty-eight".