28908235982 has 8 divisors (see below), whose sum is σ = 43368724200. Its totient is φ = 14451994584.

The previous prime is 28908235949. The next prime is 28908235987. The reversal of 28908235982 is 28953280982.

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

It is a super-2 number, since 2×28908235982² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28908235987) 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, 1044632 + ... + 1071947.

It is an arithmetic number, because the mean of its divisors is an integer number (5421090525).

Almost surely, 2^28908235982 is an apocalyptic number.

28908235982 is a deficient number, since it is larger than the sum of its proper divisors (14460488218).

28908235982 is a wasteful number, since it uses less digits than its factorization.

28908235982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123410.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 28908235982 in words is "twenty-eight billion, nine hundred eight million, two hundred thirty-five thousand, nine hundred eighty-two".