228223490 has 32 divisors (see below), whose sum is σ = 450074880. Its totient is φ = 82633600.

The previous prime is 228223483. The next prime is 228223517. The reversal of 228223490 is 94322822.

It is a super-2 number, since 2×228223490² = 104171922775560200, which contains 22 as substring.

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, 21950 + ... + 30630.

It is an arithmetic number, because the mean of its divisors is an integer number (14064840).

Almost surely, 2^228223490 is an apocalyptic number.

228223490 is a deficient number, since it is larger than the sum of its proper divisors (221851390).

228223490 is a wasteful number, since it uses less digits than its factorization.

228223490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8938.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 228223490 is about 15107.0675513152. The cubic root of 228223490 is about 611.1110183165. Note that the first 3 decimals are identical.

The spelling of 228223490 in words is "two hundred twenty-eight million, two hundred twenty-three thousand, four hundred ninety".