228923830 has 64 divisors (see below), whose sum is σ = 447068160. Its totient is φ = 84180096.

The previous prime is 228923803. The next prime is 228923831. The reversal of 228923830 is 38329822.

It is a happy number.

It is a super-2 number, since 2×228923830² = 104812239883737800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228923830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228923831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781164 + ... + 781456.

It is an arithmetic number, because the mean of its divisors is an integer number (6985440).

Almost surely, 2^228923830 is an apocalyptic number.

228923830 is a deficient number, since it is larger than the sum of its proper divisors (218144330).

228923830 is a wasteful number, since it uses less digits than its factorization.

228923830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 228923830 is about 15130.2290134684. The cubic root of 228923830 is about 611.7354770505.

The spelling of 228923830 in words is "two hundred twenty-eight million, nine hundred twenty-three thousand, eight hundred thirty".