228593985540 has 48 divisors (see below), whose sum is σ = 653681532672. Its totient is φ = 59661408256.

The previous prime is 228593985539. The next prime is 228593985589. The reversal of 228593985540 is 45589395822.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40528029 + ... + 40533668.

It is an arithmetic number, because the mean of its divisors is an integer number (13618365264).

Almost surely, 2^228593985540 is an apocalyptic number.

228593985540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228593985540 is an abundant number, since it is smaller than the sum of its proper divisors (425087547132).

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

228593985540 is a wasteful number, since it uses less digits than its factorization.

228593985540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81061756 (or 81061754 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 60.

The spelling of 228593985540 in words is "two hundred twenty-eight billion, five hundred ninety-three million, nine hundred eighty-five thousand, five hundred forty".