28342121837 has 8 divisors (see below), whose sum is σ = 29853878400. Its totient is φ = 26832371904.

The previous prime is 28342121827. The next prime is 28342121839. The reversal of 28342121837 is 73812124382.

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 28342121837 - 2¹⁴ = 28342105453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28342121794 and 28342121803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28342121839) 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 7 ways as a sum of consecutive naturals, for example, 472613 + ... + 529194.

It is an arithmetic number, because the mean of its divisors is an integer number (3731734800).

Almost surely, 2^28342121837 is an apocalyptic number.

It is an amenable number.

28342121837 is a deficient number, since it is larger than the sum of its proper divisors (1511756563).

28342121837 is a wasteful number, since it uses less digits than its factorization.

28342121837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003315.

The product of its digits is 129024, while the sum is 41.

The spelling of 28342121837 in words is "twenty-eight billion, three hundred forty-two million, one hundred twenty-one thousand, eight hundred thirty-seven".