228355842021020 has 48 divisors (see below), whose sum is σ = 553176021081600. Its totient is φ = 77561717231424.

The previous prime is 228355842021011. The next prime is 228355842021023. The reversal of 228355842021020 is 20120248553822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228355842021023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7622009120 + ... + 7622039079.

It is an arithmetic number, because the mean of its divisors is an integer number (11524500439200).

Almost surely, 2^{228355842021020} is an apocalyptic number.

228355842021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228355842021020 is an abundant number, since it is smaller than the sum of its proper divisors (324820179060580).

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

228355842021020 is a wasteful number, since it uses less digits than its factorization.

228355842021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15244048322 (or 15244048320 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 44.

The spelling of 228355842021020 in words is "two hundred twenty-eight trillion, three hundred fifty-five billion, eight hundred forty-two million, twenty-one thousand, twenty".