28318155437 has 16 divisors (see below), whose sum is σ = 33273679488. Its totient is φ = 23760060480.

The previous prime is 28318155421. The next prime is 28318155449. The reversal of 28318155437 is 73455181382.

It is not a de Polignac number, because 28318155437 - 2⁴ = 28318155421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28318155391 and 28318155400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318155457) 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 15 ways as a sum of consecutive naturals, for example, 1688063 + ... + 1704755.

It is an arithmetic number, because the mean of its divisors is an integer number (2079604968).

Almost surely, 2^28318155437 is an apocalyptic number.

It is an amenable number.

28318155437 is a deficient number, since it is larger than the sum of its proper divisors (4955524051).

28318155437 is a wasteful number, since it uses less digits than its factorization.

28318155437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28580.

The product of its digits is 806400, while the sum is 47.

The spelling of 28318155437 in words is "twenty-eight billion, three hundred eighteen million, one hundred fifty-five thousand, four hundred thirty-seven".