228637474 has 8 divisors (see below), whose sum is σ = 369337500. Its totient is φ = 105524976.

The previous prime is 228637463. The next prime is 228637477. The reversal of 228637474 is 474736822.

It can be written as a sum of positive squares in 2 ways, for example, as 228221449 + 416025 = 15107^2 + 645^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 228637474.

It is not an unprimeable number, because it can be changed into a prime (228637477) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4396849 + ... + 4396900.

Almost surely, 2^228637474 is an apocalyptic number.

228637474 is a deficient number, since it is larger than the sum of its proper divisors (140700026).

228637474 is a wasteful number, since it uses less digits than its factorization.

228637474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8793764.

The product of its digits is 451584, while the sum is 43.

The square root of 228637474 is about 15120.7630098484. The cubic root of 228637474 is about 611.4803016127.

The spelling of 228637474 in words is "two hundred twenty-eight million, six hundred thirty-seven thousand, four hundred seventy-four".