28309862141 has 16 divisors (see below), whose sum is σ = 31646039040. Its totient is φ = 25102457520.

The previous prime is 28309862137. The next prime is 28309862183. The reversal of 28309862141 is 14126890382.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28309862141 - 2² = 28309862137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28309862092 and 28309862101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28309862111) 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, 298466 + ... + 381708.

It is an arithmetic number, because the mean of its divisors is an integer number (1977877440).

Almost surely, 2^28309862141 is an apocalyptic number.

It is an amenable number.

28309862141 is a deficient number, since it is larger than the sum of its proper divisors (3336176899).

28309862141 is a wasteful number, since it uses less digits than its factorization.

28309862141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84016.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 28309862141 in words is "twenty-eight billion, three hundred nine million, eight hundred sixty-two thousand, one hundred forty-one".