228191910 has 16 divisors (see below), whose sum is σ = 547660656. Its totient is φ = 60851168.

The previous prime is 228191891. The next prime is 228191917. The reversal of 228191910 is 19191822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228191917) 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, 3803169 + ... + 3803228.

It is an arithmetic number, because the mean of its divisors is an integer number (34228791).

Almost surely, 2^228191910 is an apocalyptic number.

228191910 is an abundant number, since it is smaller than the sum of its proper divisors (319468746).

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

228191910 is a wasteful number, since it uses less digits than its factorization.

228191910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606407.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 228191910 is about 15106.0223089998. The cubic root of 228191910 is about 611.0828299003.

The spelling of 228191910 in words is "two hundred twenty-eight million, one hundred ninety-one thousand, nine hundred ten".