228723830 has 16 divisors (see below), whose sum is σ = 421745184. Its totient is φ = 89257920.

The previous prime is 228723823. The next prime is 228723839. The reversal of 228723830 is 38327822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228723839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278522 + ... + 279341.

It is an arithmetic number, because the mean of its divisors is an integer number (26359074).

Almost surely, 2^228723830 is an apocalyptic number.

228723830 is a deficient number, since it is larger than the sum of its proper divisors (193021354).

228723830 is a wasteful number, since it uses less digits than its factorization.

228723830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557911.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 228723830 is about 15123.6182839954. The cubic root of 228723830 is about 611.5572769590.

The spelling of 228723830 in words is "two hundred twenty-eight million, seven hundred twenty-three thousand, eight hundred thirty".