53843720 has 128 divisors (see below), whose sum is σ = 151200000. Its totient is φ = 16837632.

The previous prime is 53843693. The next prime is 53843723. The reversal of 53843720 is 2734835.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (53843723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154106 + ... + 154454.

It is an arithmetic number, because the mean of its divisors is an integer number (1181250).

Almost surely, 2^53843720 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 53843720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75600000).

53843720 is an abundant number, since it is smaller than the sum of its proper divisors (97356280).

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

53843720 is a wasteful number, since it uses less digits than its factorization.

53843720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 53843720 is about 7337.8280165182. The cubic root of 53843720 is about 377.6113321613.

The spelling of 53843720 in words is "fifty-three million, eight hundred forty-three thousand, seven hundred twenty".