53430528 has 72 divisors (see below), whose sum is σ = 147168000. Its totient is φ = 17188864.

The previous prime is 53430521. The next prime is 53430547. The reversal of 53430528 is 82503435.

It is a junction number, because it is equal to n+sod(n) for n = 53430495 and 53430504.

It is not an unprimeable number, because it can be changed into a prime (53430521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21073 + ... + 23471.

It is an arithmetic number, because the mean of its divisors is an integer number (2044000).

Almost surely, 2^53430528 is an apocalyptic number.

53430528 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53430528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73584000).

53430528 is an abundant number, since it is smaller than the sum of its proper divisors (93737472).

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

53430528 is a wasteful number, since it uses less digits than its factorization.

53430528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 53430528 is about 7309.6188683132. The cubic root of 53430528 is about 376.6429319979.

The spelling of 53430528 in words is "fifty-three million, four hundred thirty thousand, five hundred twenty-eight".