228211870 has 16 divisors (see below), whose sum is σ = 416409840. Its totient is φ = 90033984.

The previous prime is 228211783. The next prime is 228211889. The reversal of 228211870 is 78112822.

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, 155580 + ... + 157039.

It is an arithmetic number, because the mean of its divisors is an integer number (26025615).

Almost surely, 2^228211870 is an apocalyptic number.

228211870 is a deficient number, since it is larger than the sum of its proper divisors (188197970).

228211870 is a wasteful number, since it uses less digits than its factorization.

228211870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312699.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 228211870 is about 15106.6829582142. The cubic root of 228211870 is about 611.1006465671.

The spelling of 228211870 in words is "two hundred twenty-eight million, two hundred eleven thousand, eight hundred seventy".