28538763 has 8 divisors (see below), whose sum is σ = 41510976. Its totient is φ = 17296200.

The previous prime is 28538761. The next prime is 28538771. The reversal of 28538763 is 36783582.

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

It is not a de Polignac number, because 28538763 - 2¹ = 28538761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28538761) 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, 432373 + ... + 432438.

It is an arithmetic number, because the mean of its divisors is an integer number (5188872).

Almost surely, 2^28538763 is an apocalyptic number.

28538763 is a deficient number, since it is larger than the sum of its proper divisors (12972213).

28538763 is a wasteful number, since it uses less digits than its factorization.

28538763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864825.

The product of its digits is 241920, while the sum is 42.

The square root of 28538763 is about 5342.1683799746. The cubic root of 28538763 is about 305.5941584629.

The spelling of 28538763 in words is "twenty-eight million, five hundred thirty-eight thousand, seven hundred sixty-three".