228093386528 has 90 divisors (see below), whose sum is σ = 524175047739. Its totient is φ = 97697573568.

The previous prime is 228093386449. The next prime is 228093386537. The reversal of 228093386528 is 825683390822.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 114046693264 + 114046693264 = 337708^2 + 337708^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=337708.

It is a super-2 number, since 2×228093386528² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 132380675 + ... + 132382397.

Almost surely, 2^228093386528 is an apocalyptic number.

228093386528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228093386528

228093386528 is an abundant number, since it is smaller than the sum of its proper divisors (296081661211).

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

228093386528 is an frugal number, since it uses more digits than its factorization.

228093386528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 228093386528 in words is "two hundred twenty-eight billion, ninety-three million, three hundred eighty-six thousand, five hundred twenty-eight".