228478357340540 has 12 divisors (see below), whose sum is σ = 479804550415176. Its totient is φ = 91391342936208.

The previous prime is 228478357340539. The next prime is 228478357340549. The reversal of 228478357340540 is 45043753874822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228478357340549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5711958933494 + ... + 5711958933533.

It is an arithmetic number, because the mean of its divisors is an integer number (39983712534598).

Almost surely, 2^{228478357340540} is an apocalyptic number.

228478357340540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228478357340540 is an abundant number, since it is smaller than the sum of its proper divisors (251326193074636).

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

228478357340540 is a wasteful number, since it uses less digits than its factorization.

228478357340540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11423917867036 (or 11423917867034 counting only the distinct ones).

The product of its (nonzero) digits is 180633600, while the sum is 62.

The spelling of 228478357340540 in words is "two hundred twenty-eight trillion, four hundred seventy-eight billion, three hundred fifty-seven million, three hundred forty thousand, five hundred forty".