28755497 has 8 divisors (see below), whose sum is σ = 30430080. Its totient is φ = 27116320.

The previous prime is 28755481. The next prime is 28755511. The reversal of 28755497 is 79455782.

It is a happy number.

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

It is not a de Polignac number, because 28755497 - 2⁴ = 28755481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28755427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7172 + ... + 10437.

It is an arithmetic number, because the mean of its divisors is an integer number (3803760).

Almost surely, 2^28755497 is an apocalyptic number.

It is an amenable number.

28755497 is a deficient number, since it is larger than the sum of its proper divisors (1674583).

28755497 is a wasteful number, since it uses less digits than its factorization.

28755497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17703.

The product of its digits is 705600, while the sum is 47.

The square root of 28755497 is about 5362.4152207751. The cubic root of 28755497 is about 306.3658069870.

The spelling of 28755497 in words is "twenty-eight million, seven hundred fifty-five thousand, four hundred ninety-seven".