228193308 has 48 divisors (see below), whose sum is σ = 676130560. Its totient is φ = 65197872.

The previous prime is 228193291. The next prime is 228193313. The reversal of 228193308 is 803391822.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150166 + ... + 151677.

Almost surely, 2^228193308 is an apocalyptic number.

228193308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

228193308 is an abundant number, since it is smaller than the sum of its proper divisors (447937252).

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

228193308 is a wasteful number, since it uses less digits than its factorization.

228193308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301863 (or 301855 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 228193308 is about 15106.0685818647. The cubic root of 228193308 is about 611.0840778149.

The spelling of 228193308 in words is "two hundred twenty-eight million, one hundred ninety-three thousand, three hundred eight".