53788728 has 64 divisors (see below), whose sum is σ = 154287360. Its totient is φ = 15307776.

The previous prime is 53788699. The next prime is 53788729. The reversal of 53788728 is 82788735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53788729) 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, 58851 + ... + 59757.

It is an arithmetic number, because the mean of its divisors is an integer number (2410740).

Almost surely, 2^53788728 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 53788728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77143680).

53788728 is an abundant number, since it is smaller than the sum of its proper divisors (100498632).

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

53788728 is a wasteful number, since it uses less digits than its factorization.

53788728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1272 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The square root of 53788728 is about 7334.0799013919. The cubic root of 53788728 is about 377.4827335933.

The spelling of 53788728 in words is "fifty-three million, seven hundred eighty-eight thousand, seven hundred twenty-eight".