228278302 has 16 divisors (see below), whose sum is σ = 391554432. Its totient is φ = 97778520.

The previous prime is 228278291. The next prime is 228278339. The reversal of 228278302 is 203872822.

It is a super-2 number, since 2×228278302² = 104221966328006408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30373 + ... + 37135.

It is an arithmetic number, because the mean of its divisors is an integer number (24472152).

Almost surely, 2^228278302 is an apocalyptic number.

228278302 is a deficient number, since it is larger than the sum of its proper divisors (163276130).

228278302 is a wasteful number, since it uses less digits than its factorization.

228278302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9183.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 228278302 is about 15108.8815601950. The cubic root of 228278302 is about 611.1599375227.

The spelling of 228278302 in words is "two hundred twenty-eight million, two hundred seventy-eight thousand, three hundred two".