28290035998 has 32 divisors (see below), whose sum is σ = 49705951680. Its totient is φ = 11822423040.

The previous prime is 28290035987. The next prime is 28290035999. The reversal of 28290035998 is 89953009282.

It is a super-2 number, since 2×28290035998² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) 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 (28290035999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1187290 + ... + 1210882.

It is an arithmetic number, because the mean of its divisors is an integer number (1553310990).

Almost surely, 2^28290035998 is an apocalyptic number.

28290035998 is a deficient number, since it is larger than the sum of its proper divisors (21415915682).

28290035998 is a wasteful number, since it uses less digits than its factorization.

28290035998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25732.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 28290035998 in words is "twenty-eight billion, two hundred ninety million, thirty-five thousand, nine hundred ninety-eight".