53531928 has 112 divisors (see below), whose sum is σ = 153850680. Its totient is φ = 17449344.

The previous prime is 53531893. The next prime is 53531957. The reversal of 53531928 is 82913535.

53531928 is a `hidden beast` number, since 535 + 31 + 92 + 8 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 53531892 and 53531901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 390676 + ... + 390812.

Almost surely, 2^53531928 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 53531928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76925340).

53531928 is an abundant number, since it is smaller than the sum of its proper divisors (100318752).

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

53531928 is a wasteful number, since it uses less digits than its factorization.

53531928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 209 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 53531928 is about 7316.5516467801. The cubic root of 53531928 is about 376.8810446792.

The spelling of 53531928 in words is "fifty-three million, five hundred thirty-one thousand, nine hundred twenty-eight".