228140545 has 16 divisors (see below), whose sum is σ = 278853120. Its totient is φ = 179150400.

The previous prime is 228140513. The next prime is 228140573. The reversal of 228140545 is 545041822.

It is not a de Polignac number, because 228140545 - 2⁵ = 228140513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69900 + ... + 73090.

It is an arithmetic number, because the mean of its divisors is an integer number (17428320).

Almost surely, 2^228140545 is an apocalyptic number.

It is an amenable number.

228140545 is a deficient number, since it is larger than the sum of its proper divisors (50712575).

228140545 is a wasteful number, since it uses less digits than its factorization.

228140545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456.

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 228140545 is about 15104.3220635684. The cubic root of 228140545 is about 611.0369757696.

The spelling of 228140545 in words is "two hundred twenty-eight million, one hundred forty thousand, five hundred forty-five".