28719782 has 24 divisors (see below), whose sum is σ = 53970336. Its totient is φ = 11361168.

The previous prime is 28719781. The next prime is 28719787. The reversal of 28719782 is 28791782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28719781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9998 + ... + 12545.

It is an arithmetic number, because the mean of its divisors is an integer number (2248764).

Almost surely, 2^28719782 is an apocalyptic number.

28719782 is a deficient number, since it is larger than the sum of its proper divisors (25250554).

28719782 is a wasteful number, since it uses less digits than its factorization.

28719782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22572 (or 22565 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 28719782 is about 5359.0840635318. The cubic root of 28719782 is about 306.2389166057.

The spelling of 28719782 in words is "twenty-eight million, seven hundred nineteen thousand, seven hundred eighty-two".