228378612 has 288 divisors, whose sum is σ = 750145536. Its totient is φ = 53222400.

The previous prime is 228378587. The next prime is 228378649. The reversal of 228378612 is 216873822.

228378612 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 3408603 + ... + 3408669.

It is an arithmetic number, because the mean of its divisors is an integer number (2604672).

Almost surely, 2^228378612 is an apocalyptic number.

228378612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228378612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375072768).

228378612 is an abundant number, since it is smaller than the sum of its proper divisors (521766924).

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

228378612 is a wasteful number, since it uses less digits than its factorization.

228378612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 138 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 228378612 is about 15112.2007662683. The cubic root of 228378612 is about 611.2494430012.

The spelling of 228378612 in words is "two hundred twenty-eight million, three hundred seventy-eight thousand, six hundred twelve".