28318165854 has 32 divisors (see below), whose sum is σ = 65419508736. Its totient is φ = 8076481920.

The previous prime is 28318165853. The next prime is 28318165861. The reversal of 28318165854 is 45856181382.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 28318165797 and 28318165806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318165853) 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, 12618382 + ... + 12620625.

It is an arithmetic number, because the mean of its divisors is an integer number (2044359648).

Almost surely, 2^28318165854 is an apocalyptic number.

28318165854 is an abundant number, since it is smaller than the sum of its proper divisors (37101342882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28318165854 is a wasteful number, since it uses less digits than its factorization.

28318165854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25239040.

The product of its digits is 1843200, while the sum is 51.

The spelling of 28318165854 in words is "twenty-eight billion, three hundred eighteen million, one hundred sixty-five thousand, eight hundred fifty-four".