228757906 has 8 divisors (see below), whose sum is σ = 369532044. Its totient is φ = 105580560.

The previous prime is 228757871. The next prime is 228757937. The reversal of 228757906 is 609757822.

228757906 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 220968225 + 7789681 = 14865^2 + 2791^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4399165 + ... + 4399216.

Almost surely, 2^228757906 is an apocalyptic number.

228757906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

228757906 is a deficient number, since it is larger than the sum of its proper divisors (140774138).

228757906 is a wasteful number, since it uses less digits than its factorization.

228757906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8798396.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 228757906 is about 15124.7448242937. The cubic root of 228757906 is about 611.5876460304.

The spelling of 228757906 in words is "two hundred twenty-eight million, seven hundred fifty-seven thousand, nine hundred six".