53728299 has 32 divisors (see below), whose sum is σ = 83635200. Its totient is φ = 34024320.

The previous prime is 53728261. The next prime is 53728331. The reversal of 53728299 is 99282735.

53728299 is a `hidden beast` number, since 537 + 28 + 2 + 99 = 666.

It is not a de Polignac number, because 53728299 - 2¹¹ = 53726251 is a prime.

It is a super-2 number, since 2×53728299² = 5773460226866802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53728229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149482 + ... + 149840.

It is an arithmetic number, because the mean of its divisors is an integer number (2613600).

Almost surely, 2^53728299 is an apocalyptic number.

53728299 is a deficient number, since it is larger than the sum of its proper divisors (29906901).

53728299 is a wasteful number, since it uses less digits than its factorization.

53728299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 626 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 53728299 is about 7329.9590039781. The cubic root of 53728299 is about 377.3413195052.

The spelling of 53728299 in words is "fifty-three million, seven hundred twenty-eight thousand, two hundred ninety-nine".