228674240 has 56 divisors (see below), whose sum is σ = 545896800. Its totient is φ = 91240448.

The previous prime is 228674233. The next prime is 228674267. The reversal of 228674240 is 42476822.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 228674240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191084 + ... + 192276.

Almost surely, 2^228674240 is an apocalyptic number.

228674240 is a gapful number since it is divisible by the number (20) 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 228674240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272948400).

228674240 is an abundant number, since it is smaller than the sum of its proper divisors (317222560).

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

228674240 is a wasteful number, since it uses less digits than its factorization.

228674240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 228674240 is about 15121.9787065053. The cubic root of 228674240 is about 611.5130761756.

The spelling of 228674240 in words is "two hundred twenty-eight million, six hundred seventy-four thousand, two hundred forty".