28753538 has 8 divisors (see below), whose sum is σ = 47051280. Its totient is φ = 13069780.

The previous prime is 28753531. The next prime is 28753547. The reversal of 28753538 is 83535782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28753495 and 28753504.

It is not an unprimeable number, because it can be changed into a prime (28753531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653468 + ... + 653511.

It is an arithmetic number, because the mean of its divisors is an integer number (5881410).

Almost surely, 2^28753538 is an apocalyptic number.

28753538 is a deficient number, since it is larger than the sum of its proper divisors (18297742).

28753538 is a wasteful number, since it uses less digits than its factorization.

28753538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306992.

The product of its digits is 201600, while the sum is 41.

The square root of 28753538 is about 5362.2325574335. The cubic root of 28753538 is about 306.3588496593.

The spelling of 28753538 in words is "twenty-eight million, seven hundred fifty-three thousand, five hundred thirty-eight".