28216424137 has 8 divisors (see below), whose sum is σ = 30786143040. Its totient is φ = 25647470160.

The previous prime is 28216424129. The next prime is 28216424149. The reversal of 28216424137 is 73142461282.

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 28216424137 - 2³ = 28216424129 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 28216424137.

It is not an unprimeable number, because it can be changed into a prime (28216424167) 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, 112693 + ... + 262930.

It is an arithmetic number, because the mean of its divisors is an integer number (3848267880).

Almost surely, 2^28216424137 is an apocalyptic number.

It is an amenable number.

28216424137 is a deficient number, since it is larger than the sum of its proper divisors (2569718903).

28216424137 is a wasteful number, since it uses less digits than its factorization.

28216424137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382463.

The product of its digits is 129024, while the sum is 40.

The spelling of 28216424137 in words is "twenty-eight billion, two hundred sixteen million, four hundred twenty-four thousand, one hundred thirty-seven".