28831388149 has 8 divisors (see below), whose sum is σ = 30487322880. Its totient is φ = 27220821600.

The previous prime is 28831388147. The next prime is 28831388207. The reversal of 28831388149 is 94188313882.

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

It is a cyclic number.

It is not a de Polignac number, because 28831388149 - 2¹ = 28831388147 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 28831388149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28831388141) 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, 11340739 + ... + 11343280.

It is an arithmetic number, because the mean of its divisors is an integer number (3810915360).

Almost surely, 2^28831388149 is an apocalyptic number.

It is an amenable number.

28831388149 is a deficient number, since it is larger than the sum of its proper divisors (1655934731).

28831388149 is a wasteful number, since it uses less digits than its factorization.

28831388149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22684091.

The product of its digits is 2654208, while the sum is 55.

The spelling of 28831388149 in words is "twenty-eight billion, eight hundred thirty-one million, three hundred eighty-eight thousand, one hundred forty-nine".