228021023 has 8 divisors (see below), whose sum is σ = 230551776. Its totient is φ = 225504000.

The previous prime is 228020977. The next prime is 228021037. The reversal of 228021023 is 320120822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228021023 - 2¹² = 228016927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228020986 and 228021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228021043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31943 + ... + 38423.

It is an arithmetic number, because the mean of its divisors is an integer number (28818972).

Almost surely, 2^228021023 is an apocalyptic number.

228021023 is a deficient number, since it is larger than the sum of its proper divisors (2530753).

228021023 is a wasteful number, since it uses less digits than its factorization.

228021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6865.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 228021023 is about 15100.3649955887. The cubic root of 228021023 is about 610.9302504483.

Adding to 228021023 its reverse (320120822), we get a palindrome (548141845).

The spelling of 228021023 in words is "two hundred twenty-eight million, twenty-one thousand, twenty-three".