52668720 has 240 divisors, whose sum is σ = 202299552. Its totient is φ = 12165120.

The previous prime is 52668709. The next prime is 52668739. The reversal of 52668720 is 2786625.

52668720 is a `hidden beast` number, since 526 + 68 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158955 + ... + 159285.

Almost surely, 2^52668720 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 52668720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101149776).

52668720 is an abundant number, since it is smaller than the sum of its proper divisors (149630832).

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

52668720 is a wasteful number, since it uses less digits than its factorization.

52668720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 52668720 is about 7257.3218200656. The cubic root of 52668720 is about 374.8443087029.

The spelling of 52668720 in words is "fifty-two million, six hundred sixty-eight thousand, seven hundred twenty".