53728829 has 16 divisors (see below), whose sum is σ = 67324416. Its totient is φ = 41655600.

The previous prime is 53728757. The next prime is 53728853. The reversal of 53728829 is 92882735.

It is not a de Polignac number, because 53728829 - 2²⁴ = 36951613 is a prime.

It is a super-2 number, since 2×53728829² = 5773574131422482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53728829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53728879) 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, 14594 + ... + 17900.

It is an arithmetic number, because the mean of its divisors is an integer number (4207776).

Almost surely, 2^53728829 is an apocalyptic number.

It is an amenable number.

53728829 is a deficient number, since it is larger than the sum of its proper divisors (13595587).

53728829 is a wasteful number, since it uses less digits than its factorization.

53728829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536.

The product of its digits is 241920, while the sum is 44.

The square root of 53728829 is about 7329.9951568879. The cubic root of 53728829 is about 377.3425602557.

The spelling of 53728829 in words is "fifty-three million, seven hundred twenty-eight thousand, eight hundred twenty-nine".