53238780 has 288 divisors, whose sum is σ = 201277440. Its totient is φ = 11128320.

The previous prime is 53238739. The next prime is 53238791. The reversal of 53238780 is 8783235.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1132717 + ... + 1132763.

It is an arithmetic number, because the mean of its divisors is an integer number (698880).

Almost surely, 2^53238780 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 53238780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100638720).

53238780 is an abundant number, since it is smaller than the sum of its proper divisors (148038660).

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

53238780 is a wasteful number, since it uses less digits than its factorization.

53238780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 53238780 is about 7296.4909374301. The cubic root of 53238780 is about 376.1918347336.

The spelling of 53238780 in words is "fifty-three million, two hundred thirty-eight thousand, seven hundred eighty".