53642720 has 48 divisors (see below), whose sum is σ = 127506960. Its totient is φ = 21325824.

The previous prime is 53642689. The next prime is 53642737. The reversal of 53642720 is 2724635.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 27704 + ... + 29576.

It is an arithmetic number, because the mean of its divisors is an integer number (2656395).

Almost surely, 2^53642720 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 53642720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63753480).

53642720 is an abundant number, since it is smaller than the sum of its proper divisors (73864240).

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

53642720 is a wasteful number, since it uses less digits than its factorization.

53642720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067 (or 2059 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 53642720 is about 7324.1190596549. The cubic root of 53642720 is about 377.1408686327.

The spelling of 53642720 in words is "fifty-three million, six hundred forty-two thousand, seven hundred twenty".