28893547 has 8 divisors (see below), whose sum is σ = 30464000. Its totient is φ = 27328104.

The previous prime is 28893517. The next prime is 28893569. The reversal of 28893547 is 74539882.

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

It is a cyclic number.

It is not a de Polignac number, because 28893547 - 2⁷ = 28893419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28893497 and 28893506.

It is not an unprimeable number, because it can be changed into a prime (28893517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19954 + ... + 21352.

It is an arithmetic number, because the mean of its divisors is an integer number (3808000).

Almost surely, 2^28893547 is an apocalyptic number.

28893547 is a deficient number, since it is larger than the sum of its proper divisors (1570453).

28893547 is a wasteful number, since it uses less digits than its factorization.

28893547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505.

The product of its digits is 483840, while the sum is 46.

The square root of 28893547 is about 5375.2718070810. The cubic root of 28893547 is about 306.8552936631.

The spelling of 28893547 in words is "twenty-eight million, eight hundred ninety-three thousand, five hundred forty-seven".