28149447343 has 16 divisors (see below), whose sum is σ = 28750659840. Its totient is φ = 27552680064.

The previous prime is 28149447311. The next prime is 28149447349. The reversal of 28149447343 is 34374494182.

It is a cyclic number.

It is not a de Polignac number, because 28149447343 - 2⁵ = 28149447311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28149447349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18980680 + ... + 18982162.

It is an arithmetic number, because the mean of its divisors is an integer number (1796916240).

Almost surely, 2^28149447343 is an apocalyptic number.

28149447343 is a deficient number, since it is larger than the sum of its proper divisors (601212497).

28149447343 is a wasteful number, since it uses less digits than its factorization.

28149447343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718.

The product of its digits is 2322432, while the sum is 49.

The spelling of 28149447343 in words is "twenty-eight billion, one hundred forty-nine million, four hundred forty-seven thousand, three hundred forty-three".