228276785 has 24 divisors (see below), whose sum is σ = 303571968. Its totient is φ = 164656800.

The previous prime is 228276757. The next prime is 228276859. The reversal of 228276785 is 587672822.

It is not a de Polignac number, because 228276785 - 2⁶ = 228276721 is a prime.

It is a super-2 number, since 2×228276785² = 104220581139872450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75350 + ... + 78320.

It is an arithmetic number, because the mean of its divisors is an integer number (12648832).

Almost surely, 2^228276785 is an apocalyptic number.

It is an amenable number.

228276785 is a deficient number, since it is larger than the sum of its proper divisors (75295183).

228276785 is a wasteful number, since it uses less digits than its factorization.

228276785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125 (or 3114 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The square root of 228276785 is about 15108.8313578516. The cubic root of 228276785 is about 611.1585837195.

The spelling of 228276785 in words is "two hundred twenty-eight million, two hundred seventy-six thousand, seven hundred eighty-five".