53704320 has 128 divisors (see below), whose sum is σ = 173759040. Its totient is φ = 14106624.

The previous prime is 53704289. The next prime is 53704327. The reversal of 53704320 is 2340735.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (53704327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159192 + ... + 159528.

Almost surely, 2^53704320 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 53704320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86879520).

53704320 is an abundant number, since it is smaller than the sum of its proper divisors (120054720).

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

53704320 is a wasteful number, since it uses less digits than its factorization.

53704320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 53704320 is about 7328.3231369802. The cubic root of 53704320 is about 377.2851752008.

The spelling of 53704320 in words is "fifty-three million, seven hundred four thousand, three hundred twenty".