52442720 has 96 divisors (see below), whose sum is σ = 137168640. Its totient is φ = 18787840.

The previous prime is 52442713. The next prime is 52442743. The reversal of 52442720 is 2724425.

It is a self number, because there is not a number n which added to its sum of digits gives 52442720.

It is a congruent number.

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, 145901 + ... + 146259.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 2^52442720 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 52442720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68584320).

52442720 is an abundant number, since it is smaller than the sum of its proper divisors (84725920).

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

52442720 is a wasteful number, since it uses less digits than its factorization.

52442720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 52442720 is about 7241.7345988375. The cubic root of 52442720 is about 374.3073911986.

The spelling of 52442720 in words is "fifty-two million, four hundred forty-two thousand, seven hundred twenty".