228816387980 has 24 divisors (see below), whose sum is σ = 482384131488. Its totient is φ = 91170418688.

The previous prime is 228816387979. The next prime is 228816388049. The reversal of 228816387980 is 89783618822.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22253264 + ... + 22263543.

It is an arithmetic number, because the mean of its divisors is an integer number (20099338812).

Almost surely, 2^228816387980 is an apocalyptic number.

228816387980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228816387980 is an abundant number, since it is smaller than the sum of its proper divisors (253567743508).

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

228816387980 is a wasteful number, since it uses less digits than its factorization.

228816387980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44517073 (or 44517071 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 62.

The spelling of 228816387980 in words is "two hundred twenty-eight billion, eight hundred sixteen million, three hundred eighty-seven thousand, nine hundred eighty".