228544961620 has 24 divisors (see below), whose sum is σ = 480183163488. Its totient is φ = 91372509600.

The previous prime is 228544961609. The next prime is 228544961621. The reversal of 228544961620 is 26169445822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228544961621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800966 + ... + 2881405.

It is an arithmetic number, because the mean of its divisors is an integer number (20007631812).

Almost surely, 2^228544961620 is an apocalyptic number.

228544961620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228544961620 is an abundant number, since it is smaller than the sum of its proper divisors (251638201868).

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

228544961620 is a wasteful number, since it uses less digits than its factorization.

228544961620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684391 (or 5684389 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 228544961620 in words is "two hundred twenty-eight billion, five hundred forty-four million, nine hundred sixty-one thousand, six hundred twenty".