28740782 has 32 divisors (see below), whose sum is σ = 51978240. Its totient is φ = 11658240.

The previous prime is 28740781. The next prime is 28740791. The reversal of 28740782 is 28704782.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28740781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19694 + ... + 21102.

It is an arithmetic number, because the mean of its divisors is an integer number (1624320).

Almost surely, 2^28740782 is an apocalyptic number.

28740782 is a deficient number, since it is larger than the sum of its proper divisors (23237458).

28740782 is a wasteful number, since it uses less digits than its factorization.

28740782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 28740782 is about 5361.0429955373. The cubic root of 28740782 is about 306.3135393915.

The spelling of 28740782 in words is "twenty-eight million, seven hundred forty thousand, seven hundred eighty-two".