228025990 has 16 divisors (see below), whose sum is σ = 419992848. Its totient is φ = 89089056.

The previous prime is 228025961. The next prime is 228026009. The reversal of 228025990 is 99520822.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264717 + ... + 265576.

It is an arithmetic number, because the mean of its divisors is an integer number (26249553).

Almost surely, 2^228025990 is an apocalyptic number.

228025990 is a deficient number, since it is larger than the sum of its proper divisors (191966858).

228025990 is a wasteful number, since it uses less digits than its factorization.

228025990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530343.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 228025990 is about 15100.5294609163. The cubic root of 228025990 is about 610.9346863967.

The spelling of 228025990 in words is "two hundred twenty-eight million, twenty-five thousand, nine hundred ninety".