228023724 has 24 divisors (see below), whose sum is σ = 549219328. Its totient is φ = 73555920.

The previous prime is 228023707. The next prime is 228023729. The reversal of 228023724 is 427320822.

It is a junction number, because it is equal to n+sod(n) for n = 228023691 and 228023700.

It is not an unprimeable number, because it can be changed into a prime (228023729) 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, 306112 + ... + 306855.

Almost surely, 2^228023724 is an apocalyptic number.

It is an amenable number.

228023724 is an abundant number, since it is smaller than the sum of its proper divisors (321195604).

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

228023724 is a wasteful number, since it uses less digits than its factorization.

228023724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613005 (or 613003 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 228023724 is about 15100.4544302481. The cubic root of 228023724 is about 610.9326626763.

The spelling of 228023724 in words is "two hundred twenty-eight million, twenty-three thousand, seven hundred twenty-four".