53856828 has 72 divisors (see below), whose sum is σ = 142833600. Its totient is φ = 17087616.

The previous prime is 53856797. The next prime is 53856841. The reversal of 53856828 is 82865835.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82150 + ... + 82802.

It is an arithmetic number, because the mean of its divisors is an integer number (1983800).

Almost surely, 2^53856828 is an apocalyptic number.

53856828 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 53856828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71416800).

53856828 is an abundant number, since it is smaller than the sum of its proper divisors (88976772).

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

53856828 is a wasteful number, since it uses less digits than its factorization.

53856828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 766 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 53856828 is about 7338.7211419974. The cubic root of 53856828 is about 377.6419722418.

The spelling of 53856828 in words is "fifty-three million, eight hundred fifty-six thousand, eight hundred twenty-eight".