28416015893 has 4 divisors (see below), whose sum is σ = 29395878540. Its totient is φ = 27436153248.

The previous prime is 28416015889. The next prime is 28416015917. The reversal of 28416015893 is 39851061482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8144521009 + 20271494884 = 90247^2 + 142378^2 .

It is a cyclic number.

It is not a de Polignac number, because 28416015893 - 2² = 28416015889 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 (28416075893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489931280 + ... + 489931337.

It is an arithmetic number, because the mean of its divisors is an integer number (7348969635).

Almost surely, 2^28416015893 is an apocalyptic number.

It is an amenable number.

28416015893 is a deficient number, since it is larger than the sum of its proper divisors (979862647).

28416015893 is an equidigital number, since it uses as much as digits as its factorization.

28416015893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979862646.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 28416015893 in words is "twenty-eight billion, four hundred sixteen million, fifteen thousand, eight hundred ninety-three".