228785154 has 16 divisors (see below), whose sum is σ = 492768192. Its totient is φ = 70395408.

The previous prime is 228785129. The next prime is 228785203. The reversal of 228785154 is 451587822.

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, 1466494 + ... + 1466649.

It is an arithmetic number, because the mean of its divisors is an integer number (30798012).

Almost surely, 2^228785154 is an apocalyptic number.

228785154 is an abundant number, since it is smaller than the sum of its proper divisors (263983038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228785154 is a wasteful number, since it uses less digits than its factorization.

228785154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933161.

The product of its digits is 179200, while the sum is 42.

The square root of 228785154 is about 15125.6455729995. The cubic root of 228785154 is about 611.6119277100.

The spelling of 228785154 in words is "two hundred twenty-eight million, seven hundred eighty-five thousand, one hundred fifty-four".