228441390 has 32 divisors (see below), whose sum is σ = 549226656. Its totient is φ = 60810240.

The previous prime is 228441379. The next prime is 228441419. The reversal of 228441390 is 93144822.

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, 11370 + ... + 24210.

It is an arithmetic number, because the mean of its divisors is an integer number (17163333).

Almost surely, 2^228441390 is an apocalyptic number.

228441390 is an abundant number, since it is smaller than the sum of its proper divisors (320785266).

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

228441390 is a wasteful number, since it uses less digits than its factorization.

228441390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13444.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 228441390 is about 15114.2776870084. The cubic root of 228441390 is about 611.3054457673.

The spelling of 228441390 in words is "two hundred twenty-eight million, four hundred forty-one thousand, three hundred ninety".