228287830 has 16 divisors (see below), whose sum is σ = 412108560. Its totient is φ = 91050592.

The previous prime is 228287821. The next prime is 228287833. The reversal of 228287830 is 38782822.

It is a happy number.

It is a super-2 number, since 2×228287830² = 104230666652217800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228287833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29425 + ... + 36364.

It is an arithmetic number, because the mean of its divisors is an integer number (25756785).

Almost surely, 2^228287830 is an apocalyptic number.

228287830 is a deficient number, since it is larger than the sum of its proper divisors (183820730).

228287830 is a wasteful number, since it uses less digits than its factorization.

228287830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66143.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 228287830 is about 15109.1968681330. The cubic root of 228287830 is about 611.1684403762.

The spelling of 228287830 in words is "two hundred twenty-eight million, two hundred eighty-seven thousand, eight hundred thirty".