228132465 has 16 divisors (see below), whose sum is σ = 398195136. Its totient is φ = 110609600.

The previous prime is 228132451. The next prime is 228132467. The reversal of 228132465 is 564231822.

It is not a de Polignac number, because 228132465 - 2⁵ = 228132433 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (228132467) 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 15 ways as a sum of consecutive naturals, for example, 691146 + ... + 691475.

It is an arithmetic number, because the mean of its divisors is an integer number (24887196).

Almost surely, 2^228132465 is an apocalyptic number.

It is an amenable number.

228132465 is a deficient number, since it is larger than the sum of its proper divisors (170062671).

228132465 is a wasteful number, since it uses less digits than its factorization.

228132465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382640.

The product of its digits is 23040, while the sum is 33.

The square root of 228132465 is about 15104.0545880899. The cubic root of 228132465 is about 611.0297620335.

The spelling of 228132465 in words is "two hundred twenty-eight million, one hundred thirty-two thousand, four hundred sixty-five".