53003028 has 48 divisors (see below), whose sum is σ = 136039680. Its totient is φ = 15959424.

The previous prime is 53003009. The next prime is 53003029. The reversal of 53003028 is 82030035.

It is a junction number, because it is equal to n+sod(n) for n = 53002995 and 53003013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53003029) 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, 3718 + ... + 10946.

It is an arithmetic number, because the mean of its divisors is an integer number (2834160).

Almost surely, 2^53003028 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 53003028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68019840).

53003028 is an abundant number, since it is smaller than the sum of its proper divisors (83036652).

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

53003028 is a wasteful number, since it uses less digits than its factorization.

53003028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7296 (or 7294 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 53003028 is about 7280.3178502041. The cubic root of 53003028 is about 375.6357287659.

The spelling of 53003028 in words is "fifty-three million, three thousand, twenty-eight".