28830287091 has 8 divisors (see below), whose sum is σ = 39680395264. Its totient is φ = 18600185160.

The previous prime is 28830287081. The next prime is 28830287111. The reversal of 28830287091 is 19078203882.

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

It is not a de Polignac number, because 28830287091 - 2⁷ = 28830286963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28830287091.

It is not an unprimeable number, because it can be changed into a prime (28830287021) 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, 155001451 + ... + 155001636.

It is an arithmetic number, because the mean of its divisors is an integer number (4960049408).

Almost surely, 2^28830287091 is an apocalyptic number.

28830287091 is a deficient number, since it is larger than the sum of its proper divisors (10850108173).

28830287091 is a wasteful number, since it uses less digits than its factorization.

28830287091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310003121.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 28830287091 in words is "twenty-eight billion, eight hundred thirty million, two hundred eighty-seven thousand, ninety-one".