228351785 has 16 divisors (see below), whose sum is σ = 289742400. Its totient is φ = 172287936.

The previous prime is 228351757. The next prime is 228351793. The reversal of 228351785 is 587153822.

It is a cyclic number.

It is not a de Polignac number, because 228351785 - 2¹⁰ = 228350761 is a prime.

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, 16271 + ... + 26859.

It is an arithmetic number, because the mean of its divisors is an integer number (18108900).

Almost surely, 2^228351785 is an apocalyptic number.

It is an amenable number.

228351785 is a deficient number, since it is larger than the sum of its proper divisors (61390615).

228351785 is a wasteful number, since it uses less digits than its factorization.

228351785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10840.

The product of its digits is 134400, while the sum is 41.

The square root of 228351785 is about 15111.3131461167. The cubic root of 228351785 is about 611.2255081403.

The spelling of 228351785 in words is "two hundred twenty-eight million, three hundred fifty-one thousand, seven hundred eighty-five".