228378746 has 32 divisors (see below), whose sum is σ = 368440320. Its totient is φ = 105850800.

The previous prime is 228378737. The next prime is 228378757. The reversal of 228378746 is 647873822.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228378746.

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, 689801 + ... + 690131.

It is an arithmetic number, because the mean of its divisors is an integer number (11513760).

Almost surely, 2^228378746 is an apocalyptic number.

228378746 is a deficient number, since it is larger than the sum of its proper divisors (140061574).

228378746 is a wasteful number, since it uses less digits than its factorization.

228378746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its digits is 903168, while the sum is 47.

The square root of 228378746 is about 15112.2051997715. The cubic root of 228378746 is about 611.2495625503.

The spelling of 228378746 in words is "two hundred twenty-eight million, three hundred seventy-eight thousand, seven hundred forty-six".