28927763 has 4 divisors (see below), whose sum is σ = 28940808. Its totient is φ = 28914720.

The previous prime is 28927757. The next prime is 28927781. The reversal of 28927763 is 36772982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28927763 - 2⁶ = 28927699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28927733) 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, 2273 + ... + 7938.

It is an arithmetic number, because the mean of its divisors is an integer number (7235202).

Almost surely, 2^28927763 is an apocalyptic number.

28927763 is a deficient number, since it is larger than the sum of its proper divisors (13045).

28927763 is a wasteful number, since it uses less digits than its factorization.

28927763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13044.

The product of its digits is 254016, while the sum is 44.

The square root of 28927763 is about 5378.4535881608. The cubic root of 28927763 is about 306.9763728205.

The spelling of 28927763 in words is "twenty-eight million, nine hundred twenty-seven thousand, seven hundred sixty-three".