228165040 has 40 divisors (see below), whose sum is σ = 548781840. Its totient is φ = 88118016.

The previous prime is 228164999. The next prime is 228165043. The reversal of 228165040 is 40561822.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (228165043) 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 7 ways as a sum of consecutive naturals, for example, 46854 + ... + 51493.

It is an arithmetic number, because the mean of its divisors is an integer number (13719546).

Almost surely, 2^228165040 is an apocalyptic number.

228165040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228165040 is an abundant number, since it is smaller than the sum of its proper divisors (320616800).

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

228165040 is a wasteful number, since it uses less digits than its factorization.

228165040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98389 (or 98383 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 228165040 is about 15105.1329024276. The cubic root of 228165040 is about 611.0588435983.

The spelling of 228165040 in words is "two hundred twenty-eight million, one hundred sixty-five thousand, forty".