228161330 has 16 divisors (see below), whose sum is σ = 410906304. Its totient is φ = 91216560.

The previous prime is 228161327. The next prime is 228161389. The reversal of 228161330 is 33161822.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 228161330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18899 + ... + 28521.

It is an arithmetic number, because the mean of its divisors is an integer number (25681644).

Almost surely, 2^228161330 is an apocalyptic number.

228161330 is a deficient number, since it is larger than the sum of its proper divisors (182744974).

228161330 is a wasteful number, since it uses less digits than its factorization.

228161330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12001.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 228161330 is about 15105.0100959913. The cubic root of 228161330 is about 611.0555316089.

The spelling of 228161330 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, three hundred thirty".