53429688 has 72 divisors (see below), whose sum is σ = 156728520. Its totient is φ = 16436160.

The previous prime is 53429681. The next prime is 53429723. The reversal of 53429688 is 88692435.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53429681) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9973 + ... + 14363.

It is an arithmetic number, because the mean of its divisors is an integer number (2176785).

Almost surely, 2^53429688 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 53429688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78364260).

53429688 is an abundant number, since it is smaller than the sum of its proper divisors (103298832).

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

53429688 is a wasteful number, since it uses less digits than its factorization.

53429688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429 (or 4409 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 53429688 is about 7309.5614095512. The cubic root of 53429688 is about 376.6409582092.

The spelling of 53429688 in words is "fifty-three million, four hundred twenty-nine thousand, six hundred eighty-eight".