28917835390 has 16 divisors (see below), whose sum is σ = 52057206432. Its totient is φ = 11566000224.

The previous prime is 28917835381. The next prime is 28917835399. The reversal of 28917835390 is 9353871982.

It is an interprime number because it is at equal distance from previous prime (28917835381) and next prime (28917835399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28917835399) 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, 30474 + ... + 242413.

It is an arithmetic number, because the mean of its divisors is an integer number (3253575402).

Almost surely, 2^28917835390 is an apocalyptic number.

28917835390 is a deficient number, since it is larger than the sum of its proper divisors (23139371042).

28917835390 is a wasteful number, since it uses less digits than its factorization.

28917835390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283491.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 28917835390 in words is "twenty-eight billion, nine hundred seventeen million, eight hundred thirty-five thousand, three hundred ninety".